<clinical_study>
  <!-- This xml conforms to an XML Schema at:
    https://clinicaltrials.gov/ct2/html/images/info/public.xsd -->
  <required_header>
    <download_date>ClinicalTrials.gov processed this data on September 20, 2023</download_date>
    <link_text>Link to the current ClinicalTrials.gov record.</link_text>
    <url>https://clinicaltrials.gov/ct2/show/NCT03824236</url>
  </required_header>
  <id_info>
    <org_study_id>209003</org_study_id>
    <secondary_id>17337</secondary_id>
    <nct_id>NCT03824236</nct_id>
  </id_info>
  <brief_title>A Study to Evaluate the Efficacy, Immunogenicity and Safety in a Sporozoite Challenge Model of a Fractional Booster Dose of GSK Biologicals' Candidate Malaria Vaccine Administered to Previously Vaccinated Healthy Malaria-naïve Adults</brief_title>
  <official_title>Efficacy, Immunogenicity and Safety Study Evaluating a Fractional (Fx) Booster Dose of GSK Biologicals' Candidate Malaria Vaccine (SB257049) in a Sporozoite Challenge Model in Healthy Malaria-naïve Adults</official_title>
  <sponsors>
    <lead_sponsor>
      <agency>GlaxoSmithKline</agency>
      <agency_class>Industry</agency_class>
    </lead_sponsor>
    <collaborator>
      <agency>PATH</agency>
      <agency_class>Other</agency_class>
    </collaborator>
  </sponsors>
  <source>GlaxoSmithKline</source>
  <oversight_info>
    <has_dmc>No</has_dmc>
    <is_fda_regulated_drug>Yes</is_fda_regulated_drug>
    <is_fda_regulated_device>No</is_fda_regulated_device>
  </oversight_info>
  <brief_summary>
    <textblock>
      MALARIA-092 (NCT03162614) study was designed to evaluate the efficacy, immunogenicity and&#xD;
      safety of various dose schedules and formulations of GSK Biologicals' candidate malaria&#xD;
      vaccine (RTS,S/AS01E) in healthy malaria-naïve subjects aged 18-55 years.&#xD;
&#xD;
      The purpose of this study (follow-up to MALARIA-092 [NCT03162614] study) is to evaluate if&#xD;
      protection can be extended with an additional Fx booster dose and if unprotected subjects can&#xD;
      be protected following a Fx booster dose.&#xD;
&#xD;
      In this booster study, subjects from MALARIA-092 (NCT03162614) study who completed&#xD;
      vaccination and challenge will receive a Fx booster dose of RTS,S/AS01E and undergo a second&#xD;
      controlled human malaria infection (CHMI) three to four weeks after vaccination.&#xD;
      Additionally, subjects will be newly enrolled and will only undergo the sporozoite challenge&#xD;
      as infectivity controls.&#xD;
    </textblock>
  </brief_summary>
  <overall_status>Completed</overall_status>
  <start_date type="Actual">February 5, 2019</start_date>
  <completion_date type="Actual">September 26, 2019</completion_date>
  <primary_completion_date type="Actual">April 30, 2019</primary_completion_date>
  <phase>Phase 2</phase>
  <study_type>Interventional</study_type>
  <has_expanded_access>No</has_expanded_access>
  <study_design_info>
    <allocation>Non-Randomized</allocation>
    <intervention_model>Parallel Assignment</intervention_model>
    <primary_purpose>Prevention</primary_purpose>
    <masking>None (Open Label)</masking>
  </study_design_info>
  <primary_outcome>
    <measure>Number of Subjects Reporting Plasmodium Falciparum (P. Falciparum) Parasitemia (Defined by a Positive Blood Slide) Following Sporozoite Challenge (in All Study Groups Versus Infectivity Controls)</measure>
    <time_frame>During the sporozoite challenge dose follow-up period (from Day 22 up to Day 50)</time_frame>
    <description>Occurrence of P. falciparum parasitemia (defined by a positive blood slide) following sporozoite challenge. Post-challenge, parasitemia was determined by microscopy of Giemsa-stained thick blood films (smear). Microscopy was performed on thick smears using a validated standard operation procedure. P. falciparum infection was defined as asexual blood stage P. falciparum parasite density greater than (&gt;) 0 detected by blood slide reading. For the analysis of proportion affected (relative risk), all subjects included in the analysis were considered at risk of infection and no censoring or elimination was applied for subjects not completing the entire protocol-defined post-challenge follow-up (Day 50 - 28 days post challenge).</description>
  </primary_outcome>
  <secondary_outcome>
    <measure>Time to Onset of P. Falciparum Parasitemia (Defined by a Positive Blood Slide) Following Sporozoite Challenge</measure>
    <time_frame>During the sporozoite challenge period starting at Day 22 (after the vaccine dose administered at Day 1), up to Day 50</time_frame>
    <description>For the analyses of time to onset of parasitemia (Kaplan-Meyer and log-rank), time at risk started on first day of challenge. Time at risk was censored on Day 50 (28 days post challenge), drop-out date, start date of anti-malarial treatment or date meeting an endpoint, whichever occured first. Time-at-risk was calculated as: censor date - date challenge + 1.</description>
  </secondary_outcome>
  <secondary_outcome>
    <measure>Anti- Circumsporozoite (CS) Repeat Region Antibody Concentrations</measure>
    <time_frame>At Day 1, prior to challenge (Day 22), 28 days post-challenge (Day 50) and at study end (Day 190)</time_frame>
    <description>Anti-CS antibody concentrations are presented as Geometric Mean Concentrations (GMCs), expressed in Enzyme-linked immunosorbent assay Unit per milliliter (EU/mL). The cut-off for the assay was equal to 1.9 EU/mL. GMC calculations are performed by taking the inverse logarithm of the mean of the log concentration transformations. Antibody concentrations below the cut-off of the assay will be given an arbitrary value of half the cut-off of the assay for the purpose of GMC calculation.</description>
  </secondary_outcome>
  <secondary_outcome>
    <measure>Anti-Hepatitis B (HBs) Immunoglobulin G (IgG) Antibody Concentrations</measure>
    <time_frame>At Day 1, prior to challenge (Day 22), 28 days post-challenge (Day 50) and at study end (Day 190)</time_frame>
    <description>Anti-HBs IgG antibody concentrations are presented as Geometric Mean Concentrations (GMCs), expressed in milli-International Unit per milliliter (mIU/mL). The cut-off for the assay was equal to 6.2 mIU/mL. GMC calculations are performed by taking the inverse logarithm of the mean of the log concentration transformations. Antibody concentrations below the cut-off of the assay will be given an arbitrary value of half the cut-off of the assay for the purpose of GMC calculation.</description>
  </secondary_outcome>
  <secondary_outcome>
    <measure>Number of Subjects With Any Solicited Local Adverse Events (AEs) in the Booster Vaccination Groups</measure>
    <time_frame>Within 7 days after vaccination (day of vaccination and 6 subsequent days) in the booster vaccination groups</time_frame>
    <description>Solicited local AEs assessed are erythema, pain and swelling. Any occurrence of AE regardless of intensity grade are reported. Any Erythema or any Swelling symptom = any symptom recorded with a surface diameter greater than 0 millimeter.</description>
  </secondary_outcome>
  <secondary_outcome>
    <measure>Number of Subjects With Any Solicited General AEs in the Booster Vaccination Groups</measure>
    <time_frame>Within 7 days after vaccination (day of vaccination and 6 subsequent days) in the booster vaccination groups</time_frame>
    <description>Solicited general AEs assessed are fatigue, gastrointestinal symptoms (nausea, vomiting, diarrhea and/or abdominal pain), headache and fever. Any occurrence of symptom regardless of intensity grade and relationship to the vaccination. Fever was defined as temperature equal or greater than 37.5 °C (preferably oral route measure).</description>
  </secondary_outcome>
  <secondary_outcome>
    <measure>Number of Subjects With Any Unsolicited AEs After Vaccination, in the Booster Vaccination Groups</measure>
    <time_frame>Up to 21 days after booster vaccination period (day of vaccination and 20 subsequent days), after booster vaccination</time_frame>
    <description>An unsolicited adverse event is any untoward medical occurrence in a clinical investigation subject, temporally associated with use of a medicinal product, whether or not considered related to the medicinal product. An unsolicited adverse event is any event reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms.</description>
  </secondary_outcome>
  <secondary_outcome>
    <measure>Number of Subjects With Any Unsolicited AEs After Challenge, in All Study Groups</measure>
    <time_frame>Within 29 days after challenge (day of challenge and 28 subsequent days)</time_frame>
    <description>An adverse event is any untoward medical occurrence in a clinical investigation subject, temporally associated with use of a medicinal product, whether or not considered related to the medicinal product.</description>
  </secondary_outcome>
  <secondary_outcome>
    <measure>Number of Subjects With AEs of Specific Interest (Potential Immune-mediated Diseases [pIMDs] and Meningitis), in All Study Groups</measure>
    <time_frame>From Day 1 up to study conclusion (Day 190)</time_frame>
    <description>AEs of specific interest are potential immune-mediated diseases (pIMDs) and meningitis. pIMDs are a subset of AEs that include autoimmune diseases and other inflammatory and/or neurologic disorders of interest which may or may not have an autoimmune etiology.</description>
  </secondary_outcome>
  <secondary_outcome>
    <measure>Number of Subjects With Serious Adverse Events (SAEs) (Any, Fatal or Related to Investigational Vaccine) During the Whole Study Period, in All Study Groups</measure>
    <time_frame>From Day 1 up to study conclusion (Day 190)</time_frame>
    <description>An SAE is any untoward medical occurrence that results in death, is life threatening, requires hospitalization or prolongation of hospitalization, results in disability/incapacity or is a congenital anomaly/birth defect in the offspring of a study subject.</description>
  </secondary_outcome>
  <secondary_outcome>
    <measure>Number of Subjects With Abnormal Laboratory Values</measure>
    <time_frame>At screening, Day(D)1, D8, D22 (day of first parasitemia) and D50 (28 days post-challenge) for the booster vaccination groups; and at screening, D22 (day of first parasitemia) and D50 (28 days post-challenge) for the infectivity control subjects</time_frame>
    <description>Biochemistry (Alanine Aminotransferase [ALT], Aspartate Aminotransferase [AST] and Creatinine) and hematological (Hemoglobin, Platelets, White Blood Cells [WBC] decrease and WBC increase) laboratory values were presented according to toxicity grading scales and tabulated by group. Grading scale adapted from FDA guidance for industry: toxicity grading scale for healthy adult and adolescent volunteers enrolled in preventive vaccine clinical trials (September 2007).</description>
  </secondary_outcome>
  <number_of_arms>3</number_of_arms>
  <enrollment type="Actual">61</enrollment>
  <condition>Malaria</condition>
  <arm_group>
    <arm_group_label>P-Fx group</arm_group_label>
    <arm_group_type>Experimental</arm_group_type>
    <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
  </arm_group>
  <arm_group>
    <arm_group_label>NP-Fx group</arm_group_label>
    <arm_group_type>Experimental</arm_group_type>
    <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
  </arm_group>
  <arm_group>
    <arm_group_label>InfectivityCtrl group</arm_group_label>
    <arm_group_type>No Intervention</arm_group_type>
    <description>Healthy subjects, between and including 18 and 55 years of age, who did not receive, in the current study, any immunization but underwent sporozoite challenge.</description>
  </arm_group>
  <intervention>
    <intervention_type>Biological</intervention_type>
    <intervention_name>RTS,S/AS01E (SB257049)</intervention_name>
    <description>Subjects from the P-Fx and NP-Fx groups will receive one Fx booster dose of RTS,S/AS01E at Day 1.</description>
    <arm_group_label>NP-Fx group</arm_group_label>
    <arm_group_label>P-Fx group</arm_group_label>
  </intervention>
  <eligibility>
    <criteria>
      <textblock>
        Inclusion Criteria:&#xD;
&#xD;
        Only for subjects from MALARIA-092 study (NCT03162614):&#xD;
&#xD;
        • Subjects vaccinated and having undergone sporozoite challenge during the primary study&#xD;
        (MALARIA-092 [NCT03162614]).&#xD;
&#xD;
        For all subjects:&#xD;
&#xD;
          -  Subjects who, in the opinion of the investigator, can and will comply with the&#xD;
             requirements of the protocol.&#xD;
&#xD;
          -  Written informed consent obtained from the subject prior to performing any&#xD;
             study-specific procedure.&#xD;
&#xD;
          -  Healthy subjects as established by medical history and clinical examination before&#xD;
             entering into the study.&#xD;
&#xD;
          -  Available to participate for the duration of the study.&#xD;
&#xD;
          -  Female subjects of non-childbearing potential may be enrolled in the study.&#xD;
&#xD;
          -  Female subjects of childbearing potential may be enrolled in the study, if the&#xD;
             subject:&#xD;
&#xD;
               -  Has practiced adequate contraception for 30 days prior to Day 1, and has agreed&#xD;
                  to continue adequate contraception during the entire treatment period and for two&#xD;
                  months after malaria challenge (only for subjects from the MALARIA-092 study&#xD;
                  [NCT03162614]).&#xD;
&#xD;
               -  Has practiced adequate contraception for 30 days prior to malaria challenge, and&#xD;
                  has agreed to continue adequate contraception up to two months after malaria&#xD;
                  challenge (only for the infectivity control subjects).&#xD;
&#xD;
               -  Has a negative pregnancy test at enrollment.&#xD;
&#xD;
        For the infectivity control subjects:&#xD;
&#xD;
        • Male or female subjects between, and including, 18 and 55 years of age.&#xD;
&#xD;
        Exclusion Criteria:&#xD;
&#xD;
        For all subjects except the infectivity control subjects:&#xD;
&#xD;
          -  Any medical condition that in the judgment of the investigator would make&#xD;
             intramuscular injection unsafe.&#xD;
&#xD;
          -  History of any reaction or hypersensitivity likely to be exacerbated by any component&#xD;
             of the vaccine.&#xD;
&#xD;
          -  History of anaphylaxis post-vaccination.&#xD;
&#xD;
        For all subjects:&#xD;
&#xD;
          -  Use of any investigational or non-registered product other than the study vaccine&#xD;
             during the period starting 30 days before Day 1 (Day -29 to Day 1) (for P-Fx and NP-Fx&#xD;
             groups)/before the malaria challenge (for infectivity control subjects), or planned&#xD;
             use during the study period.&#xD;
&#xD;
          -  Chronic administration of immunosuppressants or other immune-modifying drugs during&#xD;
             the period starting six months prior to Day 1 (for P-Fx and NP-Fx groups) or malaria&#xD;
             challenge (for infectivity control subjects). For corticosteroids, this will mean&#xD;
             prednisone ≥20 mg/day, or equivalent. Inhaled and topical steroids are allowed.&#xD;
&#xD;
          -  Administration of long-acting immune-modifying drugs at any time during the study&#xD;
             period.&#xD;
&#xD;
          -  Chronic use of antibiotics with anti-malarial effects.&#xD;
&#xD;
          -  Planned administration/administration of a vaccine not foreseen by the study protocol&#xD;
             in the period within seven days of Day 1 (for P-Fx and NP-Fx groups) or the malaria&#xD;
             challenge (for infectivity control subjects).&#xD;
&#xD;
          -  Concurrently participating in another clinical study, at any time during the study&#xD;
             period, in which the subject has been or will be exposed to an investigational or a&#xD;
             non-investigational vaccine/product.&#xD;
&#xD;
          -  Seropositive for Human Immunodeficiency Virus, Hepatitis B surface antigen or&#xD;
             Hepatitis C Virus.&#xD;
&#xD;
          -  Planned travel to malaria endemic areas during the study period.&#xD;
&#xD;
          -  Any confirmed or suspected immunosuppressive or immunodeficient condition, based on&#xD;
             medical history and physical examination.&#xD;
&#xD;
          -  History of any reaction or hypersensitivity that would prevent the subject from&#xD;
             utilizing all of the following: chloroquine, atovaquone/proguanil,&#xD;
             artemether/lumefantrine.&#xD;
&#xD;
          -  Current use of medications known to cause drug reactions that would prevent the&#xD;
             subject from utilizing any of the following: chloroquine, atovaquone/proguanil,&#xD;
             artemether/lumefantrine.&#xD;
&#xD;
          -  History of severe reactions to mosquito bites.&#xD;
&#xD;
          -  Acute disease and/or fever at the time of enrollment.&#xD;
&#xD;
               -  Fever is defined as temperature ≥37.5°C/99.5°F for oral, axillary or tympanic&#xD;
                  route.&#xD;
&#xD;
               -  Subjects with a minor illness without fever may be enrolled at the discretion of&#xD;
                  the investigator.&#xD;
&#xD;
          -  Hepatomegaly, right upper quadrant abdominal pain or tenderness.&#xD;
&#xD;
          -  Any abnormal baseline laboratory screening tests: ALT, AST, creatinine, hemoglobin,&#xD;
             platelet count, total WBC, out of normal range.&#xD;
&#xD;
          -  Personal history of auto-immune disease.&#xD;
&#xD;
          -  Administration of immunoglobulins and/or any blood products during the period starting&#xD;
             three months before Day 1 (for P-Fx and NP-Fx groups)/the malaria challenge (for&#xD;
             infectivity control subjects), or planned administration during the study period.&#xD;
&#xD;
          -  Pregnant or lactating female.&#xD;
&#xD;
          -  Female planning to become pregnant or planning to discontinue contraceptive&#xD;
             precautions.&#xD;
&#xD;
          -  History of chronic alcohol consumption and/or drug abuse.&#xD;
&#xD;
          -  History of blood donation within 56 days preceding enrollment.&#xD;
&#xD;
          -  Any other significant finding that in the opinion of the investigator would increase&#xD;
             the risk of having an adverse outcome from participating in this study.&#xD;
&#xD;
          -  Acute or chronic, clinically significant pulmonary, cardiovascular, hepatic or renal&#xD;
             functional abnormality, as determined by physical examination or laboratory screening&#xD;
             tests.&#xD;
&#xD;
          -  Evidence of increased cardiovascular disease risk, &quot;moderate&quot; or &quot;high&quot;, according to&#xD;
             the National Health And Nutrition Examination Survey I (NHANES I) criteria.&#xD;
&#xD;
        Only for infectivity control subjects:&#xD;
&#xD;
          -  Previous vaccination against malaria.&#xD;
&#xD;
          -  History of splenectomy.&#xD;
&#xD;
          -  Family history of congenital or hereditary immunodeficiency.&#xD;
&#xD;
          -  Major congenital defects.&#xD;
&#xD;
          -  Serious chronic illness.&#xD;
&#xD;
          -  History of any neurological disorders or seizures.&#xD;
&#xD;
          -  Diagnosed with malaria within the last 5 years (inclusive).&#xD;
      </textblock>
    </criteria>
    <gender>All</gender>
    <minimum_age>18 Years</minimum_age>
    <maximum_age>55 Years</maximum_age>
    <healthy_volunteers>Accepts Healthy Volunteers</healthy_volunteers>
  </eligibility>
  <overall_official>
    <last_name>GSK Clinical Trials</last_name>
    <role>Study Director</role>
    <affiliation>GlaxoSmithKline (for GlaxoSmithKline; Human Genome Sciences Inc., a GSK Company; Sirtris, a GSK Company; Stiefel, a GSK Company; ViiV Healthcare)</affiliation>
  </overall_official>
  <location>
    <facility>
      <name>GSK Investigational Site</name>
      <address>
        <city>Silver Spring</city>
        <state>Maryland</state>
        <zip>20910</zip>
        <country>United States</country>
      </address>
    </facility>
  </location>
  <location_countries>
    <country>United States</country>
  </location_countries>
  <verification_date>August 2020</verification_date>
  <study_first_submitted>January 29, 2019</study_first_submitted>
  <study_first_submitted_qc>January 29, 2019</study_first_submitted_qc>
  <study_first_posted type="Actual">January 31, 2019</study_first_posted>
  <results_first_submitted>April 30, 2020</results_first_submitted>
  <results_first_submitted_qc>April 30, 2020</results_first_submitted_qc>
  <results_first_posted type="Actual">May 15, 2020</results_first_posted>
  <last_update_submitted>August 5, 2020</last_update_submitted>
  <last_update_submitted_qc>August 5, 2020</last_update_submitted_qc>
  <last_update_posted type="Actual">August 14, 2020</last_update_posted>
  <responsible_party>
    <responsible_party_type>Sponsor</responsible_party_type>
  </responsible_party>
  <keyword>Malaria</keyword>
  <keyword>RTS,S/AS01E vaccine</keyword>
  <keyword>Fractional dose</keyword>
  <keyword>Sporozoite challenge</keyword>
  <condition_browse>
    <!-- CAUTION:  The following MeSH terms are assigned with an imperfect algorithm            -->
    <mesh_term>Malaria</mesh_term>
  </condition_browse>
  <patient_data>
    <sharing_ipd>Yes</sharing_ipd>
    <ipd_description>IPD for this study will be made available via the Clinical Study Data Request site.</ipd_description>
    <ipd_info_type>Study Protocol</ipd_info_type>
    <ipd_info_type>Statistical Analysis Plan (SAP)</ipd_info_type>
    <ipd_info_type>Informed Consent Form (ICF)</ipd_info_type>
    <ipd_info_type>Clinical Study Report (CSR)</ipd_info_type>
    <ipd_time_frame>IPD will be made available within 6 months of publishing the results of the primary endpoints, key secondary endpoints and safety data of the study</ipd_time_frame>
    <ipd_access_criteria>Access is provided after a research proposal is submitted and has received approval from the Independent Review Panel and after a Data Sharing Agreement is in place. Access is provided for an initial period of 12 months but an extension can be granted, when justified, for up to another 12 months.</ipd_access_criteria>
    <ipd_url>https://clinicalstudydatarequest.com</ipd_url>
  </patient_data>
  <provided_document_section>
    <provided_document>
      <document_type>Study Protocol</document_type>
      <document_has_protocol>Yes</document_has_protocol>
      <document_has_icf>No</document_has_icf>
      <document_has_sap>No</document_has_sap>
      <document_date>September 26, 2018</document_date>
      <document_url>https://ClinicalTrials.gov/ProvidedDocs/36/NCT03824236/Prot_000.pdf</document_url>
    </provided_document>
    <provided_document>
      <document_type>Statistical Analysis Plan</document_type>
      <document_has_protocol>No</document_has_protocol>
      <document_has_icf>No</document_has_icf>
      <document_has_sap>Yes</document_has_sap>
      <document_date>December 20, 2018</document_date>
      <document_url>https://ClinicalTrials.gov/ProvidedDocs/36/NCT03824236/SAP_001.pdf</document_url>
    </provided_document>
  </provided_document_section>

  <clinical_results>

    <participant_flow>
      <group_list>
        <group group_id="P1">
          <title>P-Fx Group</title>
          <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
        </group>
        <group group_id="P2">
          <title>NP-Fx Group</title>
          <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
        </group>
        <group group_id="P3">
          <title>Infectivity Control Group</title>
          <description>Healthy subjects, between and including 18 and 55 years of age, who did not receive, in the current study, any immunization but underwent sporozoite challenge.</description>
        </group>
      </group_list>
      <period_list>
        <period>
          <title>Overall Study</title>
          <milestone_list>
            <milestone>
              <title>STARTED</title>
              <participants_list>
                <participants group_id="P1" count="25"/>
                <participants group_id="P2" count="24"/>
                <participants group_id="P3" count="12"/>
              </participants_list>
            </milestone>
            <milestone>
              <title>COMPLETED</title>
              <participants_list>
                <participants group_id="P1" count="25"/>
                <participants group_id="P2" count="24"/>
                <participants group_id="P3" count="11"/>
              </participants_list>
            </milestone>
            <milestone>
              <title>NOT COMPLETED</title>
              <participants_list>
                <participants group_id="P1" count="0"/>
                <participants group_id="P2" count="0"/>
                <participants group_id="P3" count="1"/>
              </participants_list>
            </milestone>
          </milestone_list>
          <drop_withdraw_reason_list>
            <drop_withdraw_reason>
              <title>Lost to Follow-up</title>
              <participants_list>
                <participants group_id="P1" count="0"/>
                <participants group_id="P2" count="0"/>
                <participants group_id="P3" count="1"/>
              </participants_list>
            </drop_withdraw_reason>
          </drop_withdraw_reason_list>
        </period>
      </period_list>
    </participant_flow>

    <baseline>
      <group_list>
        <group group_id="B1">
          <title>P-Fx Group</title>
          <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
        </group>
        <group group_id="B2">
          <title>NP-Fx Group</title>
          <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
        </group>
        <group group_id="B3">
          <title>Infectivity Control Group</title>
          <description>Healthy subjects, between and including 18 and 55 years of age, who did not receive, in the current study, any immunization but underwent sporozoite challenge.</description>
        </group>
        <group group_id="B4">
          <title>Total</title>
          <description>Total of all reporting groups</description>
        </group>
      </group_list>
      <analyzed_list>
        <analyzed>
          <units>Participants</units>
          <scope>Overall</scope>
          <count_list>
            <count group_id="B1" value="25"/>
            <count group_id="B2" value="24"/>
            <count group_id="B3" value="12"/>
            <count group_id="B4" value="61"/>
          </count_list>
        </analyzed>
      </analyzed_list>
      <measure_list>
        <measure>
          <title>Age</title>
          <units>Years</units>
          <param>Mean</param>
          <dispersion>Standard Deviation</dispersion>
          <class_list>
            <class>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="B1" value="35.7" spread="10.2"/>
                    <measurement group_id="B2" value="35.5" spread="10.1"/>
                    <measurement group_id="B3" value="31.7" spread="10.8"/>
                    <measurement group_id="B4" value="34.8" spread="10.2"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
          </class_list>
        </measure>
        <measure>
          <title>Sex: Female, Male</title>
          <units>Participants</units>
          <param>Count of Participants</param>
          <class_list>
            <class>
              <category_list>
                <category>
                  <title>Female</title>
                  <measurement_list>
                    <measurement group_id="B1" value="10"/>
                    <measurement group_id="B2" value="10"/>
                    <measurement group_id="B3" value="4"/>
                    <measurement group_id="B4" value="24"/>
                  </measurement_list>
                </category>
                <category>
                  <title>Male</title>
                  <measurement_list>
                    <measurement group_id="B1" value="15"/>
                    <measurement group_id="B2" value="14"/>
                    <measurement group_id="B3" value="8"/>
                    <measurement group_id="B4" value="37"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
          </class_list>
        </measure>
        <measure>
          <title>Race/Ethnicity, Customized</title>
          <units>Participants</units>
          <param>Count of Participants</param>
          <class_list>
            <class>
              <title>AMERICAN INDIAN OR ALASKA NATIVE</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="B1" value="1"/>
                    <measurement group_id="B2" value="1"/>
                    <measurement group_id="B3" value="0"/>
                    <measurement group_id="B4" value="2"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>ASIAN</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="B1" value="2"/>
                    <measurement group_id="B2" value="1"/>
                    <measurement group_id="B3" value="2"/>
                    <measurement group_id="B4" value="5"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>BLACK OR AFRICAN AMERICAN</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="B1" value="7"/>
                    <measurement group_id="B2" value="11"/>
                    <measurement group_id="B3" value="4"/>
                    <measurement group_id="B4" value="22"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>OTHER, Not specified</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="B1" value="0"/>
                    <measurement group_id="B2" value="0"/>
                    <measurement group_id="B3" value="1"/>
                    <measurement group_id="B4" value="1"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WHITE</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="B1" value="15"/>
                    <measurement group_id="B2" value="11"/>
                    <measurement group_id="B3" value="5"/>
                    <measurement group_id="B4" value="31"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
          </class_list>
        </measure>
      </measure_list>
    </baseline>

    <outcome_list>
      <outcome>
        <type>Primary</type>
        <title>Number of Subjects Reporting Plasmodium Falciparum (P. Falciparum) Parasitemia (Defined by a Positive Blood Slide) Following Sporozoite Challenge (in All Study Groups Versus Infectivity Controls)</title>
        <description>Occurrence of P. falciparum parasitemia (defined by a positive blood slide) following sporozoite challenge. Post-challenge, parasitemia was determined by microscopy of Giemsa-stained thick blood films (smear). Microscopy was performed on thick smears using a validated standard operation procedure. P. falciparum infection was defined as asexual blood stage P. falciparum parasite density greater than (&gt;) 0 detected by blood slide reading. For the analysis of proportion affected (relative risk), all subjects included in the analysis were considered at risk of infection and no censoring or elimination was applied for subjects not completing the entire protocol-defined post-challenge follow-up (Day 50 - 28 days post challenge).</description>
        <time_frame>During the sporozoite challenge dose follow-up period (from Day 22 up to Day 50)</time_frame>
        <population>Analysis was performed on Per-Protocol Set which included all subjects fulfilling eligibility criteria, who received or not the Fx dose of study vaccine according to protocol, did not report any underlying medical condition influencing the efficacy response, underwent P. falciparum challenge and had available data concerning outcome measures.</population>
        <group_list>
          <group group_id="O1">
            <title>P-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O2">
            <title>NP-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O3">
            <title>Infectivity Control Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, who did not receive, in the current study, any immunization but underwent sporozoite challenge.</description>
          </group>
        </group_list>
        <measure>
          <title>Number of Subjects Reporting Plasmodium Falciparum (P. Falciparum) Parasitemia (Defined by a Positive Blood Slide) Following Sporozoite Challenge (in All Study Groups Versus Infectivity Controls)</title>
          <description>Occurrence of P. falciparum parasitemia (defined by a positive blood slide) following sporozoite challenge. Post-challenge, parasitemia was determined by microscopy of Giemsa-stained thick blood films (smear). Microscopy was performed on thick smears using a validated standard operation procedure. P. falciparum infection was defined as asexual blood stage P. falciparum parasite density greater than (&gt;) 0 detected by blood slide reading. For the analysis of proportion affected (relative risk), all subjects included in the analysis were considered at risk of infection and no censoring or elimination was applied for subjects not completing the entire protocol-defined post-challenge follow-up (Day 50 - 28 days post challenge).</description>
          <population>Analysis was performed on Per-Protocol Set which included all subjects fulfilling eligibility criteria, who received or not the Fx dose of study vaccine according to protocol, did not report any underlying medical condition influencing the efficacy response, underwent P. falciparum challenge and had available data concerning outcome measures.</population>
          <units>Participants</units>
          <param>Count of Participants</param>
          <analyzed_list>
            <analyzed>
              <units>Participants</units>
              <scope>Measure</scope>
              <count_list>
                <count group_id="O1" value="25"/>
                <count group_id="O2" value="24"/>
                <count group_id="O3" value="11"/>
              </count_list>
            </analyzed>
          </analyzed_list>
          <class_list>
            <class>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="12"/>
                    <measurement group_id="O2" value="11"/>
                    <measurement group_id="O3" value="11"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
          </class_list>
        </measure>
        <analysis_list>
          <analysis>
            <group_id_list>
              <group_id>O1</group_id>
              <group_id>O3</group_id>
            </group_id_list>
            <groups_desc>Efficacy analysis aimed at comparing P. falciparum parasitemia incidence after sporozoite challenge between P-Fx group and the Infectivity Control group.</groups_desc>
            <non_inferiority_type>Other</non_inferiority_type>
            <non_inferiority_desc>Vaccine efficacy rate was calculated as 100*(1-RR) with RR=relative risk of developing the disease for vaccinated people (P-Fx Group) compared to unvaccinated people (Infectivity Control Group).</non_inferiority_desc>
            <p_value>0.003</p_value>
            <method>Fisher Exact</method>
            <param_type>Vaccine efficacy rate</param_type>
            <param_value>52</param_value>
            <ci_percent>95</ci_percent>
            <ci_n_sides>2-Sided</ci_n_sides>
            <ci_lower_limit>28</ci_lower_limit>
            <ci_upper_limit>68</ci_upper_limit>
          </analysis>
          <analysis>
            <group_id_list>
              <group_id>O2</group_id>
              <group_id>O3</group_id>
            </group_id_list>
            <groups_desc>Efficacy analysis aimed at comparing P. falciparum parasitemia incidence after sporozoite challenge between NP-Fx group and the Infectivity Control group.</groups_desc>
            <non_inferiority_type>Other</non_inferiority_type>
            <non_inferiority_desc>Vaccine efficacy rate was calculated as 100*(1-RR) with RR=relative risk of developing the disease for vaccinated people (NP-Fx Group) compared to unvaccinated people (Infectivity Control Group).</non_inferiority_desc>
            <p_value>0.002</p_value>
            <method>Fisher Exact</method>
            <param_type>Vaccine efficacy rate</param_type>
            <param_value>54</param_value>
            <ci_percent>95</ci_percent>
            <ci_n_sides>2-Sided</ci_n_sides>
            <ci_lower_limit>29</ci_lower_limit>
            <ci_upper_limit>70</ci_upper_limit>
          </analysis>
        </analysis_list>
      </outcome>
      <outcome>
        <type>Secondary</type>
        <title>Time to Onset of P. Falciparum Parasitemia (Defined by a Positive Blood Slide) Following Sporozoite Challenge</title>
        <description>For the analyses of time to onset of parasitemia (Kaplan-Meyer and log-rank), time at risk started on first day of challenge. Time at risk was censored on Day 50 (28 days post challenge), drop-out date, start date of anti-malarial treatment or date meeting an endpoint, whichever occured first. Time-at-risk was calculated as: censor date - date challenge + 1.</description>
        <time_frame>During the sporozoite challenge period starting at Day 22 (after the vaccine dose administered at Day 1), up to Day 50</time_frame>
        <population>Analysis was performed on Per-Protocol Set which included all subjects fulfilling eligibility criteria, who received or not the Fx dose of study vaccine according to protocol, did not report any underlying medical condition influencing the efficacy response, underwent P. falciparum challenge and had available data concerning outcome measures.</population>
        <group_list>
          <group group_id="O1">
            <title>P-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O2">
            <title>NP-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O3">
            <title>Infectivity Control Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, who did not receive, in the current study, any immunization but underwent sporozoite challenge.</description>
          </group>
        </group_list>
        <measure>
          <title>Time to Onset of P. Falciparum Parasitemia (Defined by a Positive Blood Slide) Following Sporozoite Challenge</title>
          <description>For the analyses of time to onset of parasitemia (Kaplan-Meyer and log-rank), time at risk started on first day of challenge. Time at risk was censored on Day 50 (28 days post challenge), drop-out date, start date of anti-malarial treatment or date meeting an endpoint, whichever occured first. Time-at-risk was calculated as: censor date - date challenge + 1.</description>
          <population>Analysis was performed on Per-Protocol Set which included all subjects fulfilling eligibility criteria, who received or not the Fx dose of study vaccine according to protocol, did not report any underlying medical condition influencing the efficacy response, underwent P. falciparum challenge and had available data concerning outcome measures.</population>
          <units>Days</units>
          <param>Mean</param>
          <dispersion>Standard Deviation</dispersion>
          <analyzed_list>
            <analyzed>
              <units>Participants</units>
              <scope>Measure</scope>
              <count_list>
                <count group_id="O1" value="12"/>
                <count group_id="O2" value="11"/>
                <count group_id="O3" value="11"/>
              </count_list>
            </analyzed>
          </analyzed_list>
          <class_list>
            <class>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="14.6" spread="1.9"/>
                    <measurement group_id="O2" value="14.1" spread="1.6"/>
                    <measurement group_id="O3" value="11.6" spread="0.9"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
          </class_list>
        </measure>
      </outcome>
      <outcome>
        <type>Secondary</type>
        <title>Anti- Circumsporozoite (CS) Repeat Region Antibody Concentrations</title>
        <description>Anti-CS antibody concentrations are presented as Geometric Mean Concentrations (GMCs), expressed in Enzyme-linked immunosorbent assay Unit per milliliter (EU/mL). The cut-off for the assay was equal to 1.9 EU/mL. GMC calculations are performed by taking the inverse logarithm of the mean of the log concentration transformations. Antibody concentrations below the cut-off of the assay will be given an arbitrary value of half the cut-off of the assay for the purpose of GMC calculation.</description>
        <time_frame>At Day 1, prior to challenge (Day 22), 28 days post-challenge (Day 50) and at study end (Day 190)</time_frame>
        <population>Analysis was performed on Per-Protocol Set which included all subjects fulfilling eligibility criteria, who received the Fx dose according to protocol, underwent P. falciparum challenge and had available immunogenicity data concerning outcome measures. Analysis was not performed on the Infectivity Control Group (no Fx dose being administered).</population>
        <group_list>
          <group group_id="O1">
            <title>P-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O2">
            <title>NP-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
        </group_list>
        <measure>
          <title>Anti- Circumsporozoite (CS) Repeat Region Antibody Concentrations</title>
          <description>Anti-CS antibody concentrations are presented as Geometric Mean Concentrations (GMCs), expressed in Enzyme-linked immunosorbent assay Unit per milliliter (EU/mL). The cut-off for the assay was equal to 1.9 EU/mL. GMC calculations are performed by taking the inverse logarithm of the mean of the log concentration transformations. Antibody concentrations below the cut-off of the assay will be given an arbitrary value of half the cut-off of the assay for the purpose of GMC calculation.</description>
          <population>Analysis was performed on Per-Protocol Set which included all subjects fulfilling eligibility criteria, who received the Fx dose according to protocol, underwent P. falciparum challenge and had available immunogenicity data concerning outcome measures. Analysis was not performed on the Infectivity Control Group (no Fx dose being administered).</population>
          <units>EU/mL</units>
          <param>Geometric Mean</param>
          <dispersion>95% Confidence Interval</dispersion>
          <analyzed_list>
            <analyzed>
              <units>Participants</units>
              <scope>Measure</scope>
              <count_list>
                <count group_id="O1" value="25"/>
                <count group_id="O2" value="24"/>
              </count_list>
            </analyzed>
          </analyzed_list>
          <class_list>
            <class>
              <title>Day 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="19"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="32.8" lower_limit="24.5" upper_limit="44.1"/>
                    <measurement group_id="O2" value="7.2" lower_limit="3.9" upper_limit="13.4"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Day 22</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="87.3" lower_limit="67.0" upper_limit="113.9"/>
                    <measurement group_id="O2" value="37.3" lower_limit="23.4" upper_limit="59.5"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Day 50</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="77.8" lower_limit="59.5" upper_limit="101.8"/>
                    <measurement group_id="O2" value="25.7" lower_limit="15.3" upper_limit="43.2"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Day 190</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="21"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="49.7" lower_limit="37.7" upper_limit="65.7"/>
                    <measurement group_id="O2" value="12.7" lower_limit="6.9" upper_limit="23.4"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
          </class_list>
        </measure>
      </outcome>
      <outcome>
        <type>Secondary</type>
        <title>Anti-Hepatitis B (HBs) Immunoglobulin G (IgG) Antibody Concentrations</title>
        <description>Anti-HBs IgG antibody concentrations are presented as Geometric Mean Concentrations (GMCs), expressed in milli-International Unit per milliliter (mIU/mL). The cut-off for the assay was equal to 6.2 mIU/mL. GMC calculations are performed by taking the inverse logarithm of the mean of the log concentration transformations. Antibody concentrations below the cut-off of the assay will be given an arbitrary value of half the cut-off of the assay for the purpose of GMC calculation.</description>
        <time_frame>At Day 1, prior to challenge (Day 22), 28 days post-challenge (Day 50) and at study end (Day 190)</time_frame>
        <population>Analysis was performed on Per-Protocol Set which included all subjects fulfilling eligibility criteria, who received the Fx dose according to protocol, underwent P. falciparum challenge and had available immunogenicity data concerning outcome measures. Analysis was not performed on the Infectivity Control Group (no Fx dose being administered).</population>
        <group_list>
          <group group_id="O1">
            <title>P-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O2">
            <title>NP-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
        </group_list>
        <measure>
          <title>Anti-Hepatitis B (HBs) Immunoglobulin G (IgG) Antibody Concentrations</title>
          <description>Anti-HBs IgG antibody concentrations are presented as Geometric Mean Concentrations (GMCs), expressed in milli-International Unit per milliliter (mIU/mL). The cut-off for the assay was equal to 6.2 mIU/mL. GMC calculations are performed by taking the inverse logarithm of the mean of the log concentration transformations. Antibody concentrations below the cut-off of the assay will be given an arbitrary value of half the cut-off of the assay for the purpose of GMC calculation.</description>
          <population>Analysis was performed on Per-Protocol Set which included all subjects fulfilling eligibility criteria, who received the Fx dose according to protocol, underwent P. falciparum challenge and had available immunogenicity data concerning outcome measures. Analysis was not performed on the Infectivity Control Group (no Fx dose being administered).</population>
          <units>mIU/mL</units>
          <param>Geometric Mean</param>
          <dispersion>95% Confidence Interval</dispersion>
          <analyzed_list>
            <analyzed>
              <units>Participants</units>
              <scope>Measure</scope>
              <count_list>
                <count group_id="O1" value="25"/>
                <count group_id="O2" value="24"/>
              </count_list>
            </analyzed>
          </analyzed_list>
          <class_list>
            <class>
              <title>Day 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="7788" lower_limit="4822.8" upper_limit="12576.4"/>
                    <measurement group_id="O2" value="6608.1" lower_limit="3147.2" upper_limit="13874.8"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Day 22</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="23"/>
                    <count group_id="O2" value="24"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25344.5" lower_limit="16377.3" upper_limit="39221.5"/>
                    <measurement group_id="O2" value="29271.3" lower_limit="18417.1" upper_limit="46522.4"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Day 50</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="21203.1" lower_limit="14058.2" upper_limit="31979.2"/>
                    <measurement group_id="O2" value="19894.8" lower_limit="11569.4" upper_limit="34211.1"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Day 190</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="24"/>
                    <count group_id="O2" value="22"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="11593.9" lower_limit="7446.0" upper_limit="18052.6"/>
                    <measurement group_id="O2" value="9092.5" lower_limit="4652.8" upper_limit="17768.4"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
          </class_list>
        </measure>
      </outcome>
      <outcome>
        <type>Secondary</type>
        <title>Number of Subjects With Any Solicited Local Adverse Events (AEs) in the Booster Vaccination Groups</title>
        <description>Solicited local AEs assessed are erythema, pain and swelling. Any occurrence of AE regardless of intensity grade are reported. Any Erythema or any Swelling symptom = any symptom recorded with a surface diameter greater than 0 millimeter.</description>
        <time_frame>Within 7 days after vaccination (day of vaccination and 6 subsequent days) in the booster vaccination groups</time_frame>
        <population>Analysis was performed on Intent-To-Treat Set, which included all subjects from the P-Fx and NP-Fx groups who received the Fx dose of the study vaccine and with the symptoms sheet documented.</population>
        <group_list>
          <group group_id="O1">
            <title>P-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O2">
            <title>NP-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
        </group_list>
        <measure>
          <title>Number of Subjects With Any Solicited Local Adverse Events (AEs) in the Booster Vaccination Groups</title>
          <description>Solicited local AEs assessed are erythema, pain and swelling. Any occurrence of AE regardless of intensity grade are reported. Any Erythema or any Swelling symptom = any symptom recorded with a surface diameter greater than 0 millimeter.</description>
          <population>Analysis was performed on Intent-To-Treat Set, which included all subjects from the P-Fx and NP-Fx groups who received the Fx dose of the study vaccine and with the symptoms sheet documented.</population>
          <units>Participants</units>
          <param>Count of Participants</param>
          <analyzed_list>
            <analyzed>
              <units>Participants</units>
              <scope>Measure</scope>
              <count_list>
                <count group_id="O1" value="25"/>
                <count group_id="O2" value="24"/>
              </count_list>
            </analyzed>
          </analyzed_list>
          <class_list>
            <class>
              <title>Erythema</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="8"/>
                    <measurement group_id="O2" value="4"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Pain</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="11"/>
                    <measurement group_id="O2" value="10"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Swelling</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="4"/>
                    <measurement group_id="O2" value="4"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
          </class_list>
        </measure>
      </outcome>
      <outcome>
        <type>Secondary</type>
        <title>Number of Subjects With Any Solicited General AEs in the Booster Vaccination Groups</title>
        <description>Solicited general AEs assessed are fatigue, gastrointestinal symptoms (nausea, vomiting, diarrhea and/or abdominal pain), headache and fever. Any occurrence of symptom regardless of intensity grade and relationship to the vaccination. Fever was defined as temperature equal or greater than 37.5 °C (preferably oral route measure).</description>
        <time_frame>Within 7 days after vaccination (day of vaccination and 6 subsequent days) in the booster vaccination groups</time_frame>
        <population>Analysis was performed on Intent-To-Treat Set, which included all subjects from the P-Fx and NP-Fx groups who received the Fx dose of the study vaccine and with the symptoms sheet documented.</population>
        <group_list>
          <group group_id="O1">
            <title>P-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O2">
            <title>NP-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
        </group_list>
        <measure>
          <title>Number of Subjects With Any Solicited General AEs in the Booster Vaccination Groups</title>
          <description>Solicited general AEs assessed are fatigue, gastrointestinal symptoms (nausea, vomiting, diarrhea and/or abdominal pain), headache and fever. Any occurrence of symptom regardless of intensity grade and relationship to the vaccination. Fever was defined as temperature equal or greater than 37.5 °C (preferably oral route measure).</description>
          <population>Analysis was performed on Intent-To-Treat Set, which included all subjects from the P-Fx and NP-Fx groups who received the Fx dose of the study vaccine and with the symptoms sheet documented.</population>
          <units>Participants</units>
          <param>Count of Participants</param>
          <analyzed_list>
            <analyzed>
              <units>Participants</units>
              <scope>Measure</scope>
              <count_list>
                <count group_id="O1" value="25"/>
                <count group_id="O2" value="24"/>
              </count_list>
            </analyzed>
          </analyzed_list>
          <class_list>
            <class>
              <title>Fatigue</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="7"/>
                    <measurement group_id="O2" value="4"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Gastrointestinal symptoms</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="2"/>
                    <measurement group_id="O2" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Headache</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="6"/>
                    <measurement group_id="O2" value="5"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Fever</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="3"/>
                    <measurement group_id="O2" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
          </class_list>
        </measure>
      </outcome>
      <outcome>
        <type>Secondary</type>
        <title>Number of Subjects With Any Unsolicited AEs After Vaccination, in the Booster Vaccination Groups</title>
        <description>An unsolicited adverse event is any untoward medical occurrence in a clinical investigation subject, temporally associated with use of a medicinal product, whether or not considered related to the medicinal product. An unsolicited adverse event is any event reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms.</description>
        <time_frame>Up to 21 days after booster vaccination period (day of vaccination and 20 subsequent days), after booster vaccination</time_frame>
        <population>Analysis was performed on Intent-To-Treat Set, which included all subjects from the P-Fx and NP-Fx groups who received the Fx dose of the study vaccine.</population>
        <group_list>
          <group group_id="O1">
            <title>P-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O2">
            <title>NP-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
        </group_list>
        <measure>
          <title>Number of Subjects With Any Unsolicited AEs After Vaccination, in the Booster Vaccination Groups</title>
          <description>An unsolicited adverse event is any untoward medical occurrence in a clinical investigation subject, temporally associated with use of a medicinal product, whether or not considered related to the medicinal product. An unsolicited adverse event is any event reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms.</description>
          <population>Analysis was performed on Intent-To-Treat Set, which included all subjects from the P-Fx and NP-Fx groups who received the Fx dose of the study vaccine.</population>
          <units>Participants</units>
          <param>Count of Participants</param>
          <analyzed_list>
            <analyzed>
              <units>Participants</units>
              <scope>Measure</scope>
              <count_list>
                <count group_id="O1" value="25"/>
                <count group_id="O2" value="24"/>
              </count_list>
            </analyzed>
          </analyzed_list>
          <class_list>
            <class>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="5"/>
                    <measurement group_id="O2" value="1"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
          </class_list>
        </measure>
      </outcome>
      <outcome>
        <type>Secondary</type>
        <title>Number of Subjects With Any Unsolicited AEs After Challenge, in All Study Groups</title>
        <description>An adverse event is any untoward medical occurrence in a clinical investigation subject, temporally associated with use of a medicinal product, whether or not considered related to the medicinal product.</description>
        <time_frame>Within 29 days after challenge (day of challenge and 28 subsequent days)</time_frame>
        <population>Analysis was performed on Intent-To-Treat Set, which included all subjects who received at least one dose of study vaccine. All challenged infectivity controls were also included in this analysis.</population>
        <group_list>
          <group group_id="O1">
            <title>P-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O2">
            <title>NP-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O3">
            <title>Infectivity Control Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, who did not receive, in the current study, any immunization but underwent sporozoite challenge.</description>
          </group>
        </group_list>
        <measure>
          <title>Number of Subjects With Any Unsolicited AEs After Challenge, in All Study Groups</title>
          <description>An adverse event is any untoward medical occurrence in a clinical investigation subject, temporally associated with use of a medicinal product, whether or not considered related to the medicinal product.</description>
          <population>Analysis was performed on Intent-To-Treat Set, which included all subjects who received at least one dose of study vaccine. All challenged infectivity controls were also included in this analysis.</population>
          <units>Participants</units>
          <param>Count of Participants</param>
          <analyzed_list>
            <analyzed>
              <units>Participants</units>
              <scope>Measure</scope>
              <count_list>
                <count group_id="O1" value="25"/>
                <count group_id="O2" value="24"/>
                <count group_id="O3" value="12"/>
              </count_list>
            </analyzed>
          </analyzed_list>
          <class_list>
            <class>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="19"/>
                    <measurement group_id="O2" value="19"/>
                    <measurement group_id="O3" value="12"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
          </class_list>
        </measure>
      </outcome>
      <outcome>
        <type>Secondary</type>
        <title>Number of Subjects With AEs of Specific Interest (Potential Immune-mediated Diseases [pIMDs] and Meningitis), in All Study Groups</title>
        <description>AEs of specific interest are potential immune-mediated diseases (pIMDs) and meningitis. pIMDs are a subset of AEs that include autoimmune diseases and other inflammatory and/or neurologic disorders of interest which may or may not have an autoimmune etiology.</description>
        <time_frame>From Day 1 up to study conclusion (Day 190)</time_frame>
        <population>Analysis was performed on Intent-To-Treat Set, which included all subjects who received at least one dose of study vaccine. All challenged infectivity controls were also included in this analysis.</population>
        <group_list>
          <group group_id="O1">
            <title>P-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O2">
            <title>NP-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O3">
            <title>Infectivity Control Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, who did not receive, in the current study, any immunization but underwent sporozoite challenge.</description>
          </group>
        </group_list>
        <measure>
          <title>Number of Subjects With AEs of Specific Interest (Potential Immune-mediated Diseases [pIMDs] and Meningitis), in All Study Groups</title>
          <description>AEs of specific interest are potential immune-mediated diseases (pIMDs) and meningitis. pIMDs are a subset of AEs that include autoimmune diseases and other inflammatory and/or neurologic disorders of interest which may or may not have an autoimmune etiology.</description>
          <population>Analysis was performed on Intent-To-Treat Set, which included all subjects who received at least one dose of study vaccine. All challenged infectivity controls were also included in this analysis.</population>
          <units>Participants</units>
          <param>Count of Participants</param>
          <analyzed_list>
            <analyzed>
              <units>Participants</units>
              <scope>Measure</scope>
              <count_list>
                <count group_id="O1" value="25"/>
                <count group_id="O2" value="24"/>
                <count group_id="O3" value="12"/>
              </count_list>
            </analyzed>
          </analyzed_list>
          <class_list>
            <class>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="0"/>
                    <measurement group_id="O2" value="0"/>
                    <measurement group_id="O3" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
          </class_list>
        </measure>
      </outcome>
      <outcome>
        <type>Secondary</type>
        <title>Number of Subjects With Serious Adverse Events (SAEs) (Any, Fatal or Related to Investigational Vaccine) During the Whole Study Period, in All Study Groups</title>
        <description>An SAE is any untoward medical occurrence that results in death, is life threatening, requires hospitalization or prolongation of hospitalization, results in disability/incapacity or is a congenital anomaly/birth defect in the offspring of a study subject.</description>
        <time_frame>From Day 1 up to study conclusion (Day 190)</time_frame>
        <population>Analysis was performed on Intent-To-Treat Set, which included all subjects who received at least one dose of study vaccine. All challenged infectivity controls were also included in this analysis.</population>
        <group_list>
          <group group_id="O1">
            <title>P-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O2">
            <title>NP-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O3">
            <title>Infectivity Control Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, who did not receive, in the current study, any immunization but underwent sporozoite challenge.</description>
          </group>
        </group_list>
        <measure>
          <title>Number of Subjects With Serious Adverse Events (SAEs) (Any, Fatal or Related to Investigational Vaccine) During the Whole Study Period, in All Study Groups</title>
          <description>An SAE is any untoward medical occurrence that results in death, is life threatening, requires hospitalization or prolongation of hospitalization, results in disability/incapacity or is a congenital anomaly/birth defect in the offspring of a study subject.</description>
          <population>Analysis was performed on Intent-To-Treat Set, which included all subjects who received at least one dose of study vaccine. All challenged infectivity controls were also included in this analysis.</population>
          <units>Participants</units>
          <param>Count of Participants</param>
          <analyzed_list>
            <analyzed>
              <units>Participants</units>
              <scope>Measure</scope>
              <count_list>
                <count group_id="O1" value="25"/>
                <count group_id="O2" value="24"/>
                <count group_id="O3" value="12"/>
              </count_list>
            </analyzed>
          </analyzed_list>
          <class_list>
            <class>
              <title>Any SAEs</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="2"/>
                    <measurement group_id="O2" value="0"/>
                    <measurement group_id="O3" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Related SAEs</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="0"/>
                    <measurement group_id="O2" value="0"/>
                    <measurement group_id="O3" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Fatal SAEs</title>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="0"/>
                    <measurement group_id="O2" value="0"/>
                    <measurement group_id="O3" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
          </class_list>
        </measure>
      </outcome>
      <outcome>
        <type>Secondary</type>
        <title>Number of Subjects With Abnormal Laboratory Values</title>
        <description>Biochemistry (Alanine Aminotransferase [ALT], Aspartate Aminotransferase [AST] and Creatinine) and hematological (Hemoglobin, Platelets, White Blood Cells [WBC] decrease and WBC increase) laboratory values were presented according to toxicity grading scales and tabulated by group. Grading scale adapted from FDA guidance for industry: toxicity grading scale for healthy adult and adolescent volunteers enrolled in preventive vaccine clinical trials (September 2007).</description>
        <time_frame>At screening, Day(D)1, D8, D22 (day of first parasitemia) and D50 (28 days post-challenge) for the booster vaccination groups; and at screening, D22 (day of first parasitemia) and D50 (28 days post-challenge) for the infectivity control subjects</time_frame>
        <population>Analysis was performed on Intent-To-Treat Set, which included all subjects who received at least one dose of study vaccine. All challenged infectivity controls were also included in this analysis.</population>
        <group_list>
          <group group_id="O1">
            <title>P-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O2">
            <title>NP-Fx Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
          </group>
          <group group_id="O3">
            <title>Infectivity Control Group</title>
            <description>Healthy subjects, between and including 18 and 55 years of age, who did not receive, in the current study, any immunization but underwent sporozoite challenge.</description>
          </group>
        </group_list>
        <measure>
          <title>Number of Subjects With Abnormal Laboratory Values</title>
          <description>Biochemistry (Alanine Aminotransferase [ALT], Aspartate Aminotransferase [AST] and Creatinine) and hematological (Hemoglobin, Platelets, White Blood Cells [WBC] decrease and WBC increase) laboratory values were presented according to toxicity grading scales and tabulated by group. Grading scale adapted from FDA guidance for industry: toxicity grading scale for healthy adult and adolescent volunteers enrolled in preventive vaccine clinical trials (September 2007).</description>
          <population>Analysis was performed on Intent-To-Treat Set, which included all subjects who received at least one dose of study vaccine. All challenged infectivity controls were also included in this analysis.</population>
          <units>Participants</units>
          <param>Count of Participants</param>
          <analyzed_list>
            <analyzed>
              <units>Participants</units>
              <scope>Measure</scope>
              <count_list>
                <count group_id="O1" value="25"/>
                <count group_id="O2" value="24"/>
                <count group_id="O3" value="12"/>
              </count_list>
            </analyzed>
          </analyzed_list>
          <class_list>
            <class>
              <title>ALT, Screening, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="24"/>
                    <measurement group_id="O2" value="23"/>
                    <measurement group_id="O3" value="11"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>ALT, Screening, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="1"/>
                    <measurement group_id="O2" value="1"/>
                    <measurement group_id="O3" value="1"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>ALT, Day 1, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="23"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>ALT, Day 1, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="0"/>
                    <measurement group_id="O2" value="1"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>ALT, Day 8, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="24"/>
                    <measurement group_id="O2" value="24"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>ALT, Day 8, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="1"/>
                    <measurement group_id="O2" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>ALT, Day 22, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="23"/>
                    <measurement group_id="O2" value="23"/>
                    <measurement group_id="O3" value="12"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>ALT, Day 22, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="2"/>
                    <measurement group_id="O2" value="1"/>
                    <measurement group_id="O3" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>ALT, Day 50, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="11"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="23"/>
                    <measurement group_id="O2" value="22"/>
                    <measurement group_id="O3" value="10"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>ALT, Day 50, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="11"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="2"/>
                    <measurement group_id="O2" value="2"/>
                    <measurement group_id="O3" value="1"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>AST, Screening, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                    <measurement group_id="O3" value="11"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>AST, Screening, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="0"/>
                    <measurement group_id="O2" value="0"/>
                    <measurement group_id="O3" value="1"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>AST, Day 1, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="24"/>
                    <measurement group_id="O2" value="24"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>AST, Day 1, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="1"/>
                    <measurement group_id="O2" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>AST, Day 8, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="24"/>
                    <measurement group_id="O2" value="24"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>AST, Day 8, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="1"/>
                    <measurement group_id="O2" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>AST, Day 22, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="23"/>
                    <measurement group_id="O3" value="12"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>AST, Day 22, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="0"/>
                    <measurement group_id="O2" value="1"/>
                    <measurement group_id="O3" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>AST, Day 50, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="11"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                    <measurement group_id="O3" value="10"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>AST, Day 50, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="11"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="0"/>
                    <measurement group_id="O2" value="0"/>
                    <measurement group_id="O3" value="1"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Creatinine, Screening, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                    <measurement group_id="O3" value="12"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Creatinine, Day 1, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Creatinine, Day 8, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Creatinine, Day 22, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                    <measurement group_id="O3" value="12"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Creatinine, Day 50, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="11"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                    <measurement group_id="O3" value="11"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Hemoglobin, Screening, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="24"/>
                    <measurement group_id="O2" value="23"/>
                    <measurement group_id="O3" value="12"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Hemoglobin, Screening, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="1"/>
                    <measurement group_id="O2" value="1"/>
                    <measurement group_id="O3" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Hemoglobin, Day 1, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="22"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Hemoglobin, Day 1, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="0"/>
                    <measurement group_id="O2" value="2"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Hemoglobin, Day 8, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="22"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Hemoglobin, Day 8, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="0"/>
                    <measurement group_id="O2" value="2"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Hemoglobin, Day 22, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="23"/>
                    <measurement group_id="O2" value="21"/>
                    <measurement group_id="O3" value="10"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Hemoglobin, Day 22, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="2"/>
                    <measurement group_id="O2" value="2"/>
                    <measurement group_id="O3" value="2"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Hemoglobin, Day 22, Grade 2</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="0"/>
                    <measurement group_id="O2" value="1"/>
                    <measurement group_id="O3" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Hemoglobin, Day 50, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="11"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="23"/>
                    <measurement group_id="O2" value="22"/>
                    <measurement group_id="O3" value="10"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Hemoglobin, Day 50, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="11"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="2"/>
                    <measurement group_id="O2" value="2"/>
                    <measurement group_id="O3" value="1"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Platelets, Screening, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="24"/>
                    <measurement group_id="O2" value="24"/>
                    <measurement group_id="O3" value="12"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Platelets, Screening, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="1"/>
                    <measurement group_id="O2" value="0"/>
                    <measurement group_id="O3" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Platelets, Day 1, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="24"/>
                    <measurement group_id="O2" value="24"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Platelets, Day 1, Grade 2</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="1"/>
                    <measurement group_id="O2" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Platelets, Day 8, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Platelets, Day 22, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="24"/>
                    <measurement group_id="O2" value="24"/>
                    <measurement group_id="O3" value="12"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Platelets, Day 22, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="1"/>
                    <measurement group_id="O2" value="0"/>
                    <measurement group_id="O3" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>Platelets, Day 50, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="11"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                    <measurement group_id="O3" value="11"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Decrease, Screening, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="24"/>
                    <measurement group_id="O2" value="24"/>
                    <measurement group_id="O3" value="12"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Decrease, Screening, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="1"/>
                    <measurement group_id="O2" value="0"/>
                    <measurement group_id="O3" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Decrease, Day 1, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="24"/>
                    <measurement group_id="O2" value="22"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Decrease, Day 1, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="0"/>
                    <measurement group_id="O2" value="2"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Decrease, Day 1, Grade 2</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="1"/>
                    <measurement group_id="O2" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Decrease, Day 8, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="23"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Decrease, Day 8, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="0"/>
                    <measurement group_id="O2" value="1"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Decrease, Day 22, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                    <measurement group_id="O3" value="12"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Decrease, Day 50, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="11"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="24"/>
                    <measurement group_id="O2" value="23"/>
                    <measurement group_id="O3" value="11"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Decrease, Day 50, Grade 1</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="11"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="1"/>
                    <measurement group_id="O2" value="1"/>
                    <measurement group_id="O3" value="0"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Increase, Screening, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                    <measurement group_id="O3" value="12"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Increase, Day 1, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Increase, Day 8, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="0"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Increase, Day 22, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="12"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                    <measurement group_id="O3" value="12"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
            <class>
              <title>WBC Increase, Day 50, Grade 0</title>
              <analyzed_list>
                <analyzed>
                  <units>Participants</units>
                  <scope>Class</scope>
                  <count_list>
                    <count group_id="O1" value="25"/>
                    <count group_id="O2" value="24"/>
                    <count group_id="O3" value="11"/>
                  </count_list>
                </analyzed>
              </analyzed_list>
              <category_list>
                <category>
                  <measurement_list>
                    <measurement group_id="O1" value="25"/>
                    <measurement group_id="O2" value="24"/>
                    <measurement group_id="O3" value="11"/>
                  </measurement_list>
                </category>
              </category_list>
            </class>
          </class_list>
        </measure>
      </outcome>
    </outcome_list>

    <reported_events>
      <time_frame>Solicited AEs were collected within the 7-day post-booster period. Unsolicited AEs were collected within the 21-day post-booster or within the 29-day post-challenge period. SAEs were collected from Day 1 up to study conclusion (Day 190).</time_frame>
      <group_list>
        <group group_id="E1">
          <title>P-Fx Group</title>
          <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
        </group>
        <group group_id="E2">
          <title>NP-Fx Group</title>
          <description>Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.</description>
        </group>
        <group group_id="E3">
          <title>Infectivity Control Group</title>
          <description>Healthy subjects, between and including 18 and 55 years of age, who did not receive, in the current study, any immunization but underwent sporozoite challenge.</description>
        </group>
      </group_list>
      <serious_events>
        <default_vocab>MedDRA 22.1</default_vocab>
        <default_assessment>Systematic Assessment</default_assessment>
        <category_list>
          <category>
            <title>Total</title>
            <event_list>
              <event>
                <sub_title>Total, all-cause mortality</sub_title>
                <counts group_id="E1" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Total, serious adverse events</sub_title>
                <counts group_id="E1" subjects_affected="2" subjects_at_risk="25"/>
                <counts group_id="E2" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" subjects_affected="0" subjects_at_risk="12"/>
              </event>
            </event_list>
          </category>
          <category>
            <title>Injury, poisoning and procedural complications</title>
            <event_list>
              <event>
                <sub_title>Hypobarism</sub_title>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Injury</sub_title>
                <description>The same subject reported both injury and road traffic accident.</description>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Road traffic accident</sub_title>
                <description>The same subject reported both injury and road traffic accident.</description>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
            </event_list>
          </category>
        </category_list>
      </serious_events>
      <other_events>
        <frequency_threshold>0</frequency_threshold>
        <default_vocab>MedDRA 22.1</default_vocab>
        <default_assessment>Systematic Assessment</default_assessment>
        <category_list>
          <category>
            <title>Total</title>
            <event_list>
              <event>
                <sub_title>Total, other adverse events</sub_title>
                <counts group_id="E1" subjects_affected="21" subjects_at_risk="25"/>
                <counts group_id="E2" subjects_affected="22" subjects_at_risk="24"/>
                <counts group_id="E3" subjects_affected="12" subjects_at_risk="12"/>
              </event>
            </event_list>
          </category>
          <category>
            <title>Gastrointestinal disorders</title>
            <event_list>
              <event>
                <sub_title>Nausea</sub_title>
                <counts group_id="E1" events="2" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="3" subjects_affected="3" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Diarrhoea</sub_title>
                <counts group_id="E1" events="2" subjects_affected="2" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Abdominal pain</sub_title>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Vomiting</sub_title>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Gastrointestinal disorder</sub_title>
                <counts group_id="E1" events="2" subjects_affected="2" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Abdominal discomfort</sub_title>
                <counts group_id="E1" events="0" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Dyspepsia</sub_title>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
            </event_list>
          </category>
          <category>
            <title>General disorders</title>
            <event_list>
              <event>
                <sub_title>Injection site pain</sub_title>
                <counts group_id="E1" events="11" subjects_affected="11" subjects_at_risk="25"/>
                <counts group_id="E2" events="10" subjects_affected="10" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Fatigue</sub_title>
                <counts group_id="E1" events="11" subjects_affected="11" subjects_at_risk="25"/>
                <counts group_id="E2" events="7" subjects_affected="7" subjects_at_risk="24"/>
                <counts group_id="E3" events="1" subjects_affected="1" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Injection site erythema</sub_title>
                <counts group_id="E1" events="8" subjects_affected="8" subjects_at_risk="25"/>
                <counts group_id="E2" events="4" subjects_affected="4" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Injection site swelling</sub_title>
                <counts group_id="E1" events="4" subjects_affected="4" subjects_at_risk="25"/>
                <counts group_id="E2" events="4" subjects_affected="4" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Chills</sub_title>
                <counts group_id="E1" events="4" subjects_affected="3" subjects_at_risk="25"/>
                <counts group_id="E2" events="2" subjects_affected="2" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Feeling hot</sub_title>
                <counts group_id="E1" events="2" subjects_affected="2" subjects_at_risk="25"/>
                <counts group_id="E2" events="2" subjects_affected="2" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Pyrexia</sub_title>
                <counts group_id="E1" events="3" subjects_affected="3" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Malaise</sub_title>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="2" subjects_affected="2" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Peripheral swelling</sub_title>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Thirst</sub_title>
                <counts group_id="E1" events="0" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
            </event_list>
          </category>
          <category>
            <title>Infections and infestations</title>
            <event_list>
              <event>
                <sub_title>Malaria</sub_title>
                <counts group_id="E1" events="12" subjects_affected="12" subjects_at_risk="25"/>
                <counts group_id="E2" events="11" subjects_affected="11" subjects_at_risk="24"/>
                <counts group_id="E3" events="11" subjects_affected="11" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Upper respiratory tract infection</sub_title>
                <counts group_id="E1" events="4" subjects_affected="4" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Infection</sub_title>
                <counts group_id="E1" events="0" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
            </event_list>
          </category>
          <category>
            <title>Injury, poisoning and procedural complications</title>
            <event_list>
              <event>
                <sub_title>Arthropod bite</sub_title>
                <counts group_id="E1" events="0" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" events="2" subjects_affected="2" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Post procedural discomfort</sub_title>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
            </event_list>
          </category>
          <category>
            <title>Investigations</title>
            <event_list>
              <event>
                <sub_title>Aspartate aminotransferase increased</sub_title>
                <counts group_id="E1" events="0" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
            </event_list>
          </category>
          <category>
            <title>Metabolism and nutrition disorders</title>
            <event_list>
              <event>
                <sub_title>Decreased appetite</sub_title>
                <counts group_id="E1" events="4" subjects_affected="3" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
            </event_list>
          </category>
          <category>
            <title>Musculoskeletal and connective tissue disorders</title>
            <event_list>
              <event>
                <sub_title>Back pain</sub_title>
                <counts group_id="E1" events="3" subjects_affected="3" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="1" subjects_affected="1" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Myalgia</sub_title>
                <counts group_id="E1" events="5" subjects_affected="5" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Neck pain</sub_title>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="2" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Musculoskeletal pain</sub_title>
                <counts group_id="E1" events="2" subjects_affected="2" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Joint swelling</sub_title>
                <counts group_id="E1" events="0" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Muscle tightness</sub_title>
                <counts group_id="E1" events="0" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Musculoskeletal stiffness</sub_title>
                <counts group_id="E1" events="0" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Pain in extremity</sub_title>
                <counts group_id="E1" events="0" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Joint warmth</sub_title>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
            </event_list>
          </category>
          <category>
            <title>Nervous system disorders</title>
            <event_list>
              <event>
                <sub_title>Headache</sub_title>
                <counts group_id="E1" events="11" subjects_affected="9" subjects_at_risk="25"/>
                <counts group_id="E2" events="8" subjects_affected="8" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
            </event_list>
          </category>
          <category>
            <title>Respiratory, thoracic and mediastinal disorders</title>
            <event_list>
              <event>
                <sub_title>Rhinorrhoea</sub_title>
                <counts group_id="E1" events="0" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="2" subjects_affected="2" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Nasal congestion</sub_title>
                <counts group_id="E1" events="0" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" events="2" subjects_affected="2" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Sneezing</sub_title>
                <counts group_id="E1" events="0" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="1" subjects_affected="1" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Cough</sub_title>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Oropharyngeal pain</sub_title>
                <counts group_id="E1" events="0" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Paranasal sinus discomfort</sub_title>
                <counts group_id="E1" events="0" subjects_affected="0" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Sinus congestion</sub_title>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
            </event_list>
          </category>
          <category>
            <title>Skin and subcutaneous tissue disorders</title>
            <event_list>
              <event>
                <sub_title>Hyperhidrosis</sub_title>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="1" subjects_affected="1" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
              <event>
                <sub_title>Pruritus</sub_title>
                <counts group_id="E1" events="1" subjects_affected="1" subjects_at_risk="25"/>
                <counts group_id="E2" events="0" subjects_affected="0" subjects_at_risk="24"/>
                <counts group_id="E3" events="0" subjects_affected="0" subjects_at_risk="12"/>
              </event>
            </event_list>
          </category>
        </category_list>
      </other_events>
    </reported_events>

    <certain_agreements>
      <pi_employee>Principal Investigators are NOT employed by the organization sponsoring the study.</pi_employee>
      <restrictive_agreement>GSK agreements may vary with individual investigators, but will not prohibit any investigator from publishing. GSK supports the publication of results from all centers of a multi-center trial but requests that reports based on single site data not precede the primary publication of the entire clinical trial.</restrictive_agreement>
    </certain_agreements>
    <point_of_contact>
      <name_or_title>GSK Response Center</name_or_title>
      <organization>GlaxoSmithKline</organization>
      <phone>866-435-7343</phone>
      <email>GSKClinicalSupportHD@gsk.com</email>
    </point_of_contact>
  </clinical_results>
</clinical_study>


download date: ClinicalTrials.gov processed this data on September 20, 2023
link text: Link to the current ClinicalTrials.gov record.
url: https://clinicaltrials.gov/ct2/show/NCT03824236
org study id: 209003
secondary id: 17337
nct id: NCT03824236
lead sponsor: 
collaborator: 
has dmc: No
is fda regulated drug: Yes
is fda regulated device: No
MALARIA-092 (NCT03162614) study was designed to evaluate the efficacy, immunogenicity and
      safety of various dose schedules and formulations of GSK Biologicals' candidate malaria
      vaccine (RTS,S/AS01E) in healthy malaria-naïve subjects aged 18-55 years.

      The purpose of this study (follow-up to MALARIA-092 [NCT03162614] study) is to evaluate if
      protection can be extended with an additional Fx booster dose and if unprotected subjects can
      be protected following a Fx booster dose.

      In this booster study, subjects from MALARIA-092 (NCT03162614) study who completed
      vaccination and challenge will receive a Fx booster dose of RTS,S/AS01E and undergo a second
      controlled human malaria infection (CHMI) three to four weeks after vaccination.
      Additionally, subjects will be newly enrolled and will only undergo the sporozoite challenge
      as infectivity controls.
allocation: Non-Randomized
intervention model: Parallel Assignment
primary purpose: Prevention
masking: None (Open Label)
measure: Number of Subjects Reporting Plasmodium Falciparum (P. Falciparum) Parasitemia (Defined by a Positive Blood Slide) Following Sporozoite Challenge (in All Study Groups Versus Infectivity Controls)
time frame: During the sporozoite challenge dose follow-up period (from Day 22 up to Day 50)
description: Occurrence of P. falciparum parasitemia (defined by a positive blood slide) following sporozoite challenge. Post-challenge, parasitemia was determined by microscopy of Giemsa-stained thick blood films (smear). Microscopy was performed on thick smears using a validated standard operation procedure. P. falciparum infection was defined as asexual blood stage P. falciparum parasite density greater than (>) 0 detected by blood slide reading. For the analysis of proportion affected (relative risk), all subjects included in the analysis were considered at risk of infection and no censoring or elimination was applied for subjects not completing the entire protocol-defined post-challenge follow-up (Day 50 - 28 days post challenge).
measure: Time to Onset of P. Falciparum Parasitemia (Defined by a Positive Blood Slide) Following Sporozoite Challenge
time frame: During the sporozoite challenge period starting at Day 22 (after the vaccine dose administered at Day 1), up to Day 50
description: For the analyses of time to onset of parasitemia (Kaplan-Meyer and log-rank), time at risk started on first day of challenge. Time at risk was censored on Day 50 (28 days post challenge), drop-out date, start date of anti-malarial treatment or date meeting an endpoint, whichever occured first. Time-at-risk was calculated as: censor date - date challenge + 1.
measure: Anti- Circumsporozoite (CS) Repeat Region Antibody Concentrations
time frame: At Day 1, prior to challenge (Day 22), 28 days post-challenge (Day 50) and at study end (Day 190)
description: Anti-CS antibody concentrations are presented as Geometric Mean Concentrations (GMCs), expressed in Enzyme-linked immunosorbent assay Unit per milliliter (EU/mL). The cut-off for the assay was equal to 1.9 EU/mL. GMC calculations are performed by taking the inverse logarithm of the mean of the log concentration transformations. Antibody concentrations below the cut-off of the assay will be given an arbitrary value of half the cut-off of the assay for the purpose of GMC calculation.
measure: Anti-Hepatitis B (HBs) Immunoglobulin G (IgG) Antibody Concentrations
time frame: At Day 1, prior to challenge (Day 22), 28 days post-challenge (Day 50) and at study end (Day 190)
description: Anti-HBs IgG antibody concentrations are presented as Geometric Mean Concentrations (GMCs), expressed in milli-International Unit per milliliter (mIU/mL). The cut-off for the assay was equal to 6.2 mIU/mL. GMC calculations are performed by taking the inverse logarithm of the mean of the log concentration transformations. Antibody concentrations below the cut-off of the assay will be given an arbitrary value of half the cut-off of the assay for the purpose of GMC calculation.
measure: Number of Subjects With Any Solicited Local Adverse Events (AEs) in the Booster Vaccination Groups
time frame: Within 7 days after vaccination (day of vaccination and 6 subsequent days) in the booster vaccination groups
description: Solicited local AEs assessed are erythema, pain and swelling. Any occurrence of AE regardless of intensity grade are reported. Any Erythema or any Swelling symptom = any symptom recorded with a surface diameter greater than 0 millimeter.
measure: Number of Subjects With Any Solicited General AEs in the Booster Vaccination Groups
time frame: Within 7 days after vaccination (day of vaccination and 6 subsequent days) in the booster vaccination groups
description: Solicited general AEs assessed are fatigue, gastrointestinal symptoms (nausea, vomiting, diarrhea and/or abdominal pain), headache and fever. Any occurrence of symptom regardless of intensity grade and relationship to the vaccination. Fever was defined as temperature equal or greater than 37.5 °C (preferably oral route measure).
measure: Number of Subjects With Any Unsolicited AEs After Vaccination, in the Booster Vaccination Groups
time frame: Up to 21 days after booster vaccination period (day of vaccination and 20 subsequent days), after booster vaccination
description: An unsolicited adverse event is any untoward medical occurrence in a clinical investigation subject, temporally associated with use of a medicinal product, whether or not considered related to the medicinal product. An unsolicited adverse event is any event reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms.
measure: Number of Subjects With Any Unsolicited AEs After Challenge, in All Study Groups
time frame: Within 29 days after challenge (day of challenge and 28 subsequent days)
description: An adverse event is any untoward medical occurrence in a clinical investigation subject, temporally associated with use of a medicinal product, whether or not considered related to the medicinal product.
measure: Number of Subjects With AEs of Specific Interest (Potential Immune-mediated Diseases [pIMDs] and Meningitis), in All Study Groups
time frame: From Day 1 up to study conclusion (Day 190)
description: AEs of specific interest are potential immune-mediated diseases (pIMDs) and meningitis. pIMDs are a subset of AEs that include autoimmune diseases and other inflammatory and/or neurologic disorders of interest which may or may not have an autoimmune etiology.
measure: Number of Subjects With Serious Adverse Events (SAEs) (Any, Fatal or Related to Investigational Vaccine) During the Whole Study Period, in All Study Groups
time frame: From Day 1 up to study conclusion (Day 190)
description: An SAE is any untoward medical occurrence that results in death, is life threatening, requires hospitalization or prolongation of hospitalization, results in disability/incapacity or is a congenital anomaly/birth defect in the offspring of a study subject.
measure: Number of Subjects With Abnormal Laboratory Values
time frame: At screening, Day(D)1, D8, D22 (day of first parasitemia) and D50 (28 days post-challenge) for the booster vaccination groups; and at screening, D22 (day of first parasitemia) and D50 (28 days post-challenge) for the infectivity control subjects
description: Biochemistry (Alanine Aminotransferase [ALT], Aspartate Aminotransferase [AST] and Creatinine) and hematological (Hemoglobin, Platelets, White Blood Cells [WBC] decrease and WBC increase) laboratory values were presented according to toxicity grading scales and tabulated by group. Grading scale adapted from FDA guidance for industry: toxicity grading scale for healthy adult and adolescent volunteers enrolled in preventive vaccine clinical trials (September 2007).
arm group label: P-Fx group
arm group type: Experimental
description: Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.
arm group label: NP-Fx group
arm group type: Experimental
description: Healthy subjects, between and including 18 and 55 years of age, vaccinated with RTS,S/AS01 vaccine (different doses/formulations) and not protected following the first challenge at the time of the MALARIA-092 study (NCT03162614), who received, in the current study, a fractional (Fx) booster dose of RTS,S/AS01E 12 months after completion of the vaccination course in the Malaria-092 study, and underwent sporozoite challenge.
arm group label: InfectivityCtrl group
arm group type: No Intervention
description: Healthy subjects, between and including 18 and 55 years of age, who did not receive, in the current study, any immunization but underwent sporozoite challenge.
intervention type: Biological
intervention name: RTS,S/AS01E (SB257049)
description: Subjects from the P-Fx and NP-Fx groups will receive one Fx booster dose of RTS,S/AS01E at Day 1.
arm group label: NP-Fx group
arm group label: P-Fx group
criteria: 
gender: All
minimum age: 18 Years
maximum age: 55 Years
healthy volunteers: Accepts Healthy Volunteers
last name: GSK Clinical Trials
role: Study Director
affiliation: GlaxoSmithKline (for GlaxoSmithKline; Human Genome Sciences Inc., a GSK Company; Sirtris, a GSK Company; Stiefel, a GSK Company; ViiV Healthcare)
facility: 
country: United States
responsible party type: Sponsor
mesh term: Malaria
sharing ipd: Yes
ipd description: IPD for this study will be made available via the Clinical Study Data Request site.
ipd info type: Study Protocol
ipd info type: Statistical Analysis Plan (SAP)
ipd info type: Informed Consent Form (ICF)
ipd info type: Clinical Study Report (CSR)
ipd time frame: IPD will be made available within 6 months of publishing the results of the primary endpoints, key secondary endpoints and safety data of the study
ipd access criteria: Access is provided after a research proposal is submitted and has received approval from the Independent Review Panel and after a Data Sharing Agreement is in place. Access is provided for an initial period of 12 months but an extension can be granted, when justified, for up to another 12 months.
ipd url: https://clinicalstudydatarequest.com
provided document: 
provided document: 
participant flow: 
baseline: 
outcome list: 
reported events: 
certain agreements: 
point of contact: 