<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/NCT01671696</url>
  </required_header>
  <id_info>
    <org_study_id>10-096 CCMC</org_study_id>
    <nct_id>NCT01671696</nct_id>
  </id_info>
  <brief_title>Defining Late Onset Occult Asymptomatic Cardiotoxicity in Childhood Cancer Survivors Exposed to Anthracycline Therapy</brief_title>
  <official_title>Defining Late Onset Occult Asymptomatic Cardiotoxicity in Childhood Cancer Survivors Exposed to Anthracycline Therapy: A Cardiac Magnetic Resonance and Biomarker Imaging and Serological Biomarker Study</official_title>
  <sponsors>
    <lead_sponsor>
      <agency>Connecticut Children's Medical Center</agency>
      <agency_class>Other</agency_class>
    </lead_sponsor>
  </sponsors>
  <source>Connecticut Children's Medical Center</source>
  <oversight_info>
    <has_dmc>No</has_dmc>
  </oversight_info>
  <brief_summary>
    <textblock>
      The main hypothesis being tested is that magnetic resonance imaging and serologic biomarkers&#xD;
      of apoptosis and extracellular matrix remodeling will precede echocardiographic indices of&#xD;
      systolic and diastolic function among childhood cancer survivors treated with anthracyclines&#xD;
      thus allowing evaluation of new therapies to prevent and manage heart failure in these&#xD;
      patients.&#xD;
    </textblock>
  </brief_summary>
  <detailed_description>
    <textblock>
      Part A: Patients who received a high dose of anthracyclines and who completed chemotherapy&#xD;
      for a minimum of 2 year and are still in remission we gathered information about their&#xD;
      previous heart disease, radiation dose to the heart, bone marrow transplant, age at&#xD;
      treatment, gender, elevation of serum cardiac troponin-T or N-terminal pro-brain natriuretic&#xD;
      peptide measurements during anthracycline therapy, systolic dysfunction and congestive heart&#xD;
      failure during anthracycline therapy. Participants had a Cardiac MRI (CMRI), echo and&#xD;
      collection of serum for the the measurement of biomarkers of inflammation (C Reactive Protein&#xD;
      (CRP), TNF-α, myocyte injury (Cardiac troponin (cTn), extracellular matrix remodeling,&#xD;
      (Matrix Metalloproteinases (MMP), Tissue inhibitors of metalloproteinases (TIMPs), C terminal&#xD;
      propeptide of type I procollagen (PICP), C terminal telopeptide of collagen type I (CITP),&#xD;
      Bone Alkaline Phosphatase, apoptosis (Caspase-3 P17 peptide), and ventricular derived B-type&#xD;
      natriuretic peptide (BNP) once during the study. Part A has been completed.&#xD;
&#xD;
      Part B: For those patients enrolled in part A they had another CMRI to validate CMRI findings&#xD;
      and to study progression of cardiomyopathy overtime by comparing all CMRI derived imaging&#xD;
      parameters between the first and second subject visits. Results of their standard of care&#xD;
      echo will be post-processed to include the same parameters as the subjects' previous research&#xD;
      echo that took place 2 years ago for comparison. Subjects had a blood draw (3mL) for for DNA&#xD;
      and RNA analysis. Part B has been completed.&#xD;
&#xD;
      Part C: Will include an additional 60 patients who received low dose anthracycline therapy&#xD;
      (&lt;300 mg/m2) and who were also identified through the cardio-oncology registry. These&#xD;
      patients will undergo a CMRI, study echo, and a blood sampling: Cardiac Troponin (cTn) ,&#xD;
      Matrix Metalloproteinases (MMP), Tissue inhibitors of metalloproteinases (TIMPs), C terminal&#xD;
      propeptide of type I procollagen (PICP), C terminal telopeptide of collagen type I (CITP),&#xD;
      Bone Alkaline Phosphatase, Caspase, C Reactive Protein (CRP), TNF-α, hematocrit, and&#xD;
      NT-proBNP (a more sensitive measurement of BNP). Blood draw for DNA/microRNA analysis.&#xD;
      Results of the standard of care echo will be post-processed to include the same parameters as&#xD;
      the original 60 subjects' previous research echocardiogram for comparison purposes. All&#xD;
      subjects recruited will serve either as a &quot;case&quot; (because they have cardiotoxicity) or as a&#xD;
      control, if they are free of cardiotoxicity. Currently enrolling for part C patients who&#xD;
      received low dose anthracyclines.&#xD;
&#xD;
      Cardiotoxicity for the overall group will be defined as global systolic dysfunction&#xD;
      (indicated by an ejection fraction &lt; 2SD below normal (Z score &lt;-2), or decrease in global&#xD;
      circumferential or longitudinal strain magnitude less than 2SD below normal. CMRI is&#xD;
      considered to be the standard of care for assessment of cardiomyopathy. Based on the proven&#xD;
      utility of CMRI as a screening tool for cardiomyopathy, CMRI studies will be performed as&#xD;
      standard of care for assessment of global and regional myocardial function in cancer&#xD;
      survivors. T1 pulse sequences for estimation of native T1 and ECV are continually being&#xD;
      developed and refined, and will require further validation prior to clinical application.&#xD;
      These sequences will still be considered be part of research.&#xD;
&#xD;
      STATISTICAL ANALYSIS Part A. CMRI parameters will be correlated with echo parameters of&#xD;
      systolic and diastolic function. Data on peak circumferential strain will be compared to&#xD;
      published historic normative data. T1 relaxation values will be compared to a group of age&#xD;
      matched controls with normal SF and no exposure to anthracyclines. Results are expressed as&#xD;
      mean and SD for continuous data and as percentages and numbers for categorical data. Subjects&#xD;
      will be classified into 3 groups as detailed previously. Differences in the means between the&#xD;
      groups and between exposed and controls for all normally distributed data will be assessed by&#xD;
      analysis of variance. For skewed data, the Mann-Whitney U test will be performed. Image&#xD;
      quality scores for all patients will be averaged for corresponding T1 maps. Mean segmental T1&#xD;
      and ventricular myocardial peak circumferential strain values and standard deviations will be&#xD;
      calculated. The literature shows that T1 value is subject to a mild systematic heart rate&#xD;
      dependency and a patient's height and weight has some impact on T1 values. To find and&#xD;
      correct for these potential confounding factors, the relationships between T1 and heart rate,&#xD;
      height, and weight will be investigated by using linear regression analysis of section data.&#xD;
      In addition, the relationship between T1 mapping-derived relaxation time, left ventricular&#xD;
      myocardial peak circumference strain and echocardiography parameters of systolic and&#xD;
      diastolic function will be investigated by using linear regression analysis of section data.&#xD;
      All statistical analysis will be performed with SAS 9.2. All tests are two tailed, and P &lt;&#xD;
      .05 is considered to indicate a significant difference. Interobserver and intraobserver&#xD;
      variability of HARP strain will be performed using a paired t test and reported as a mean&#xD;
      difference and 95% confidence interval.&#xD;
&#xD;
      Serum levels of MMP-1, MMP-2, MMP-9 and MMP-1/TIMP ratio, PICP, CITP, Bone Alkaline&#xD;
      Phosphatase and that of Caspase-3 P17 peptide will be measured as indicators of extracellular&#xD;
      matrix remodeling and apoptosis, respectively and compared to CMRI and echocardiographic&#xD;
      parameters of systolic and diastolic function. Serum level of a cleaved p17 fragment (p17) of&#xD;
      Caspase-3, the end effector caspase for apoptosis, will be compared to published normative&#xD;
      data from a group of 167 healthy subjects 68. Circulating levels of MMP-1, MMP-2, MMP-9 and&#xD;
      TIMP-1 will be compared to published historic healthy controls 69 Serum biomarkers N-terminal&#xD;
      pro-BNP (NT-pro-BNP) and Cardiac troponin will also be obtained given their known association&#xD;
      with cardiac dysfunction.&#xD;
&#xD;
      Biomarkers statistical analyses results are expressed as mean and SD for continuous data and&#xD;
      as percentages and numbers for categorical data. Subjects will be classified into three&#xD;
      groups as detailed previously. Differences in the means between the groups for all normally&#xD;
      distributed data will be assessed by analysis of variance. For skewed data, the Mann-Whitney&#xD;
      U test will be performed. The relationship between levels of Troponin, Caspase-3 P17 peptide,&#xD;
      MMPS, TIMPs, PICP, CITP, Bone Alkaline Phosphatase, CRP, CK-MB, and echo parameters of&#xD;
      systolic and diastolic function will be investigated by using linear regression analysis of&#xD;
      section data. All statistical analysis will be performed with SAS 9.2. All tests are two&#xD;
      tailed, and P &lt; .05 is considered to indicate a significant difference.&#xD;
&#xD;
      The interdisciplinary nature and the potential for bedside to bench translational research&#xD;
      should position us to obtain pilot data based on the projected changes in our patient&#xD;
      cohorts. For example, we will test whether serum P17 level in any patient groups (groups 1-3)&#xD;
      is higher than that in healthy controls. However, it is possible that only the late groups&#xD;
      (Group 2 or 3) will show a rise in P17 level. Similarly, only the late groups may show&#xD;
      changes in serum MMPs or T1 relaxation time. If any of the change is too small to be detected&#xD;
      given the sample size, we will focus on parameters exhibiting larger differences vs. healthy&#xD;
      controls. This will also guide us in designing future study. The change in MMPs may reflect&#xD;
      presence of diastolic vs. systolic dysfunction in the early vs. late groups. For example, it&#xD;
      is possible that the early group (Group 1) will exhibit diastolic problem, manifested as a&#xD;
      reduced MMP-1/TIMP-1 ratio. When significant systolic dysfunction ensues, the ratio may be&#xD;
      reversed.&#xD;
&#xD;
      Part B: All CMRI imaging biomarkers of cardiotoxicity demonstrated in the baseline pilot&#xD;
      study will be compared among the first and second study visits among the high dose (≥240&#xD;
      mg/m2) subjects. Frequencies and percents of the patients who exhibit the phenotype of&#xD;
      cardiotoxicity as measured by cMRI will be calculated for each study visit. If the&#xD;
      frequencies/percents are the same or greater in the second visit as compared to the first,&#xD;
      then the use of cMRI to indicate anthracycline induced cardiotoxicity can be validated.&#xD;
&#xD;
      Specific Aim 2: All CMR imaging parameters of athracycline induced cardiomyopathy will be&#xD;
      compared between the first and second study visits among high dose (≥240 mg/m2) subjects. All&#xD;
      CMR volumetric parameters including volumes, mass, and measurements of end systolic fiber&#xD;
      stress as well as measurements of global and regional myocardial function, T1 maps and ECV&#xD;
      will be compared between the two study visits using paired t-tests, p&lt;0.05 will be used to&#xD;
      indicate a statistically significant difference.&#xD;
&#xD;
      Part C:&#xD;
&#xD;
      Specific Aim 1: To compare CMR parameters of global, and regional systolic function and&#xD;
      microscopic fibrosis as indicated by changes in T1 mapping-derived relaxation time and&#xD;
      increase in extracellular volume matrix (ECV) to those of subjects in the high-dose group.&#xD;
&#xD;
      Overview: The objective of this aim is to test the hypothesis that CMR imaging biomarkers of&#xD;
      AIC will be less frequent among subjects exposed to low dose anthracyclines. The proportion&#xD;
      of subjects that possess the anthracycline-induced cardiotoxicity phenotype in both the high&#xD;
      and low dose groups will be compared using Fisher's exact test. P&lt; 0.05 will be used to&#xD;
      indicate a statistically significant difference.&#xD;
&#xD;
      Specific Aim 2: To quantitate serologic biomarkers of inflammation, myocyte injury,&#xD;
      extracellular matrix remodeling and apoptosis among childhood cancer survivors treated with&#xD;
      low-dose anthracyclines.&#xD;
&#xD;
      This aim will tell the hypothesis that elevation of biomarkers of inflammation, myocyte&#xD;
      injury, extracellular matrix remodeling and apoptosis will be less prevalent in survivors of&#xD;
      childhood cancer exposed to low-dose anthracyclines, as reflected by lower levels of serum&#xD;
      CRP, high sensitivity troponin, MMPs and Caspase-3 P17 levels.&#xD;
&#xD;
      Overview: The objective is to characterize changes in serum levels of markers for&#xD;
      extracellular matrix remodeling and apoptosis in patients at various intervals after&#xD;
      anthracycline chemotherapy. Serum levels of MMP-1, MMP-2, MMP-9 and MMP-1/TIMP ratio, PICP,&#xD;
      CITP, Bone Alkaline Phosphatase and that of Caspase-3 P17 peptide will be measured as&#xD;
      indicators of extracellular matrix remodeling and apoptosis, respectively and compared to&#xD;
      CMRI and echocardiographic parameters of systolic and diastolic function. Serum level of a&#xD;
      cleaved p17 fragment (p17) of Caspase-3, the end effector caspase for apoptosis, will be&#xD;
      compared to published normative data from a group of 167 healthy subjects (Agosto, Azrin,&#xD;
      Singh, Jaffe, &amp; Liang, 2011). Circulating levels of MMP-1, MMP-2, MMP-9 and TIMP-1 will be&#xD;
      compared to normal controls. Serum biomarkers N-terminal pro-BNP (NT-pro-BNP) and Cardiac&#xD;
      troponin will also be obtained given their known association with cardiac dysfunction. A&#xD;
      literature review of six small studies suggest that NT-pro-BNP, and Cardiac troponin might&#xD;
      also be useful markers in the early detection of anthracycline-induced cardiotoxicity&#xD;
      (Mavinkurve-Groothuis, Kapusta, Nir, &amp; Groot-Loonen, 2008). Of interest, in a larger study&#xD;
      performed in 122 asymptomatic survivors of childhood cancer, none had abnormal cTnT levels&#xD;
      and only thirteen percent had abnormal NT-pro-BNP levels (Mavinkurve-Groothuis et al.&#xD;
      631-36).&#xD;
&#xD;
      Specfic Aim 3: To compare the results of the DNA/RNA analysis between all subjects with and&#xD;
      without anthracycline induced cardiomyopathy regardless of cumulative dose. DNA and RNA&#xD;
      analysis will be collected for future analysis by the Jackson Lab bioinformatics core unit,&#xD;
      to be analyzed based on the results of a parallel murine model of cardiotoxicity.&#xD;
    </textblock>
  </detailed_description>
  <overall_status>Active, not recruiting</overall_status>
  <start_date type="Actual">November 15, 2011</start_date>
  <completion_date type="Anticipated">December 31, 2024</completion_date>
  <primary_completion_date type="Actual">October 6, 2017</primary_completion_date>
  <study_type>Observational</study_type>
  <has_expanded_access>No</has_expanded_access>
  <study_design_info>
    <observational_model>Case-Control</observational_model>
    <time_perspective>Cross-Sectional</time_perspective>
  </study_design_info>
  <primary_outcome>
    <measure>To see if a CMRI is better at detecting occult asymptomatic cardiotoxicity</measure>
    <time_frame>2 year</time_frame>
    <description>Changes in T1 mapping-derived relaxation time and left ventricular myocardial peak circumferential and longitudinal strain magnitude and segmental circumferential strain magnitude are present in asymptomatic post-chemotherapy pediatric patients who have normal standard CMRI parameters. Circumferential strain analysis and measurement of the T1 myocardial relaxation time by CMRI may accurately identify occult cardiovascular dysfunction in patients exposed to high dose anthracyclines.</description>
  </primary_outcome>
  <secondary_outcome>
    <measure>To quantitate serological markers of diffuse myocardial fibrosis and apoptosis</measure>
    <time_frame>1 year</time_frame>
    <description>Testing changes in extracellular matrix remodeling and increases in tissue apoptosis occur in asymptomatic post chemotherapy patients</description>
  </secondary_outcome>
  <other_outcome>
    <measure>To conduct phenotype analysis of DNA/microRNA of patients exposed to anthracycline</measure>
    <time_frame>1 year</time_frame>
    <description>Analyzing DNA/microRNA in patients who were treated with high and low dose anthracyclines that may cause cardiotoxicity</description>
  </other_outcome>
  <enrollment type="Actual">80</enrollment>
  <condition>Cardiovascular Disease</condition>
  <intervention>
    <intervention_type>Other</intervention_type>
    <intervention_name>Cardiac MRI</intervention_name>
    <description>Cardiac MRI</description>
  </intervention>
  <eligibility>
    <study_pop>
      <textblock>
        Survivors of childhood cancer who were treated with anthracyclines and are greater than 2&#xD;
        years from their last cycle of chemotherapy&#xD;
      </textblock>
    </study_pop>
    <sampling_method>Non-Probability Sample</sampling_method>
    <criteria>
      <textblock>
        5.1 A. Subject Inclusion Criteria&#xD;
&#xD;
          -  Childhood cancer survivors from the late effect clinic who had received ≥240 mg/m2&#xD;
             anthracyclines, been in complete remission and off chemotherapy for a minimum of 2&#xD;
             years.&#xD;
&#xD;
          -  Age &gt; 9 years of age*&#xD;
&#xD;
          -  Parental/caregiver consent and subject assent to enrollment&#xD;
&#xD;
             * Age &gt; 9 years of age was chosen to avoid the need for general anesthesia or sedation&#xD;
             B. Subject Inclusion Criteria&#xD;
&#xD;
          -  Enrolled in part A of the study, which took place from October 2011 to July 2013.&#xD;
&#xD;
          -  Parental/caregiver consent and subject assent to enrollment C. Subject Inclusion&#xD;
             Criteria&#xD;
&#xD;
          -  Childhood cancer survivors from the late effect clinic who had received &lt; 300 mg/m2&#xD;
             anthracyclines, been in complete remission and off chemotherapy for a minimum of 1&#xD;
             year&#xD;
&#xD;
          -  Age ≥ 9 years of age*&#xD;
&#xD;
          -  Parental/caregiver consent and subject assent to enrollment&#xD;
&#xD;
          -  * Age &gt; 9 years of age was chosen to avoid the need for general anesthesia or sedation&#xD;
&#xD;
        5.2 A. Subject Exclusion Criteria&#xD;
&#xD;
          -  Contraindications to CMRI.*&#xD;
&#xD;
          -  Pregnancy**&#xD;
&#xD;
             * Contraindications to CMRI (i.e., magnetically activated implants/devices; cardiac&#xD;
             pacemaker or wires; after the patients are scheduled for CMRI, they will be sent our&#xD;
             standard pre-MRI paperwork/questionnaire, to determine eligibility to have an MRI)&#xD;
&#xD;
             **If a female patient of child bearing age is not sure if they are pregnant or not, as&#xD;
             part of the standard CMRI with contrast procedures, a urine pregnancy test will be&#xD;
             done. If the result is positive the subject will not be allowed to continue in the&#xD;
             study. CMRI with gadolinium may affect a fetus, and also the CMRI results are an&#xD;
             integral part of this research study.&#xD;
&#xD;
          -  Orbital X-Ray confirmed to have metal in the eye or patient confirmed to have metal in&#xD;
             the eye.&#xD;
&#xD;
        B. Subject Exclusion Criteria&#xD;
&#xD;
          -  Not enrolled in part A of the study&#xD;
&#xD;
          -  Contraindications to CMRI*&#xD;
&#xD;
          -  Pregnancy **&#xD;
&#xD;
          -  Orbital X-Ray confirmed to have metal in the eye or patient confirmed to have metal in&#xD;
             the eye&#xD;
&#xD;
          -  C. Subject Exclusion Criteria&#xD;
&#xD;
          -  Total Cumulative dose anthracyclines ≥300 mg/m2&#xD;
&#xD;
          -  Contraindications to CMRI*&#xD;
&#xD;
          -  Pregnancy **&#xD;
&#xD;
          -  Orbital X-Ray confirmed to have metal in the eye or patient confirmed to have metal in&#xD;
             the eye&#xD;
&#xD;
        Exclusion Criteria:&#xD;
&#xD;
          -  Contraindications to CMRI&#xD;
&#xD;
          -  Relapse of their cancer&#xD;
&#xD;
          -  Pregnancy&#xD;
      </textblock>
    </criteria>
    <gender>All</gender>
    <minimum_age>9 Years</minimum_age>
    <maximum_age>35 Years</maximum_age>
    <healthy_volunteers>No</healthy_volunteers>
  </eligibility>
  <overall_official>
    <last_name>Olga Salazar, MS</last_name>
    <role>Principal Investigator</role>
    <affiliation>Connecticut Childrens Med Ctr</affiliation>
  </overall_official>
  <location>
    <facility>
      <name>Connecticut Children's Medical Center</name>
      <address>
        <city>Hartford</city>
        <state>Connecticut</state>
        <zip>06106</zip>
        <country>United States</country>
      </address>
    </facility>
  </location>
  <location_countries>
    <country>United States</country>
  </location_countries>
  <verification_date>July 2023</verification_date>
  <study_first_submitted>August 21, 2012</study_first_submitted>
  <study_first_submitted_qc>August 21, 2012</study_first_submitted_qc>
  <study_first_posted type="Estimate">August 23, 2012</study_first_posted>
  <last_update_submitted>July 20, 2023</last_update_submitted>
  <last_update_submitted_qc>July 20, 2023</last_update_submitted_qc>
  <last_update_posted type="Actual">July 21, 2023</last_update_posted>
  <responsible_party>
    <responsible_party_type>Principal Investigator</responsible_party_type>
    <investigator_affiliation>Connecticut Children's Medical Center</investigator_affiliation>
    <investigator_full_name>Olga Salazar</investigator_full_name>
    <investigator_title>Assistant Clinical Professor, Pediatric Cardiology</investigator_title>
  </responsible_party>
  <condition_browse>
    <!-- CAUTION:  The following MeSH terms are assigned with an imperfect algorithm            -->
    <mesh_term>Cardiovascular Diseases</mesh_term>
    <mesh_term>Cardiotoxicity</mesh_term>
  </condition_browse>
  <patient_data>
    <sharing_ipd>No</sharing_ipd>
  </patient_data>
  <!-- Results have not yet been posted for this study                                          -->
</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/NCT01671696
org study id: 10-096 CCMC
nct id: NCT01671696
lead sponsor: 
has dmc: No
The main hypothesis being tested is that magnetic resonance imaging and serologic biomarkers
      of apoptosis and extracellular matrix remodeling will precede echocardiographic indices of
      systolic and diastolic function among childhood cancer survivors treated with anthracyclines
      thus allowing evaluation of new therapies to prevent and manage heart failure in these
      patients.
Part A: Patients who received a high dose of anthracyclines and who completed chemotherapy
      for a minimum of 2 year and are still in remission we gathered information about their
      previous heart disease, radiation dose to the heart, bone marrow transplant, age at
      treatment, gender, elevation of serum cardiac troponin-T or N-terminal pro-brain natriuretic
      peptide measurements during anthracycline therapy, systolic dysfunction and congestive heart
      failure during anthracycline therapy. Participants had a Cardiac MRI (CMRI), echo and
      collection of serum for the the measurement of biomarkers of inflammation (C Reactive Protein
      (CRP), TNF-α, myocyte injury (Cardiac troponin (cTn), extracellular matrix remodeling,
      (Matrix Metalloproteinases (MMP), Tissue inhibitors of metalloproteinases (TIMPs), C terminal
      propeptide of type I procollagen (PICP), C terminal telopeptide of collagen type I (CITP),
      Bone Alkaline Phosphatase, apoptosis (Caspase-3 P17 peptide), and ventricular derived B-type
      natriuretic peptide (BNP) once during the study. Part A has been completed.

      Part B: For those patients enrolled in part A they had another CMRI to validate CMRI findings
      and to study progression of cardiomyopathy overtime by comparing all CMRI derived imaging
      parameters between the first and second subject visits. Results of their standard of care
      echo will be post-processed to include the same parameters as the subjects' previous research
      echo that took place 2 years ago for comparison. Subjects had a blood draw (3mL) for for DNA
      and RNA analysis. Part B has been completed.

      Part C: Will include an additional 60 patients who received low dose anthracycline therapy
      (<300 mg/m2) and who were also identified through the cardio-oncology registry. These
      patients will undergo a CMRI, study echo, and a blood sampling: Cardiac Troponin (cTn) ,
      Matrix Metalloproteinases (MMP), Tissue inhibitors of metalloproteinases (TIMPs), C terminal
      propeptide of type I procollagen (PICP), C terminal telopeptide of collagen type I (CITP),
      Bone Alkaline Phosphatase, Caspase, C Reactive Protein (CRP), TNF-α, hematocrit, and
      NT-proBNP (a more sensitive measurement of BNP). Blood draw for DNA/microRNA analysis.
      Results of the standard of care echo will be post-processed to include the same parameters as
      the original 60 subjects' previous research echocardiogram for comparison purposes. All
      subjects recruited will serve either as a "case" (because they have cardiotoxicity) or as a
      control, if they are free of cardiotoxicity. Currently enrolling for part C patients who
      received low dose anthracyclines.

      Cardiotoxicity for the overall group will be defined as global systolic dysfunction
      (indicated by an ejection fraction < 2SD below normal (Z score <-2), or decrease in global
      circumferential or longitudinal strain magnitude less than 2SD below normal. CMRI is
      considered to be the standard of care for assessment of cardiomyopathy. Based on the proven
      utility of CMRI as a screening tool for cardiomyopathy, CMRI studies will be performed as
      standard of care for assessment of global and regional myocardial function in cancer
      survivors. T1 pulse sequences for estimation of native T1 and ECV are continually being
      developed and refined, and will require further validation prior to clinical application.
      These sequences will still be considered be part of research.

      STATISTICAL ANALYSIS Part A. CMRI parameters will be correlated with echo parameters of
      systolic and diastolic function. Data on peak circumferential strain will be compared to
      published historic normative data. T1 relaxation values will be compared to a group of age
      matched controls with normal SF and no exposure to anthracyclines. Results are expressed as
      mean and SD for continuous data and as percentages and numbers for categorical data. Subjects
      will be classified into 3 groups as detailed previously. Differences in the means between the
      groups and between exposed and controls for all normally distributed data will be assessed by
      analysis of variance. For skewed data, the Mann-Whitney U test will be performed. Image
      quality scores for all patients will be averaged for corresponding T1 maps. Mean segmental T1
      and ventricular myocardial peak circumferential strain values and standard deviations will be
      calculated. The literature shows that T1 value is subject to a mild systematic heart rate
      dependency and a patient's height and weight has some impact on T1 values. To find and
      correct for these potential confounding factors, the relationships between T1 and heart rate,
      height, and weight will be investigated by using linear regression analysis of section data.
      In addition, the relationship between T1 mapping-derived relaxation time, left ventricular
      myocardial peak circumference strain and echocardiography parameters of systolic and
      diastolic function will be investigated by using linear regression analysis of section data.
      All statistical analysis will be performed with SAS 9.2. All tests are two tailed, and P <
      .05 is considered to indicate a significant difference. Interobserver and intraobserver
      variability of HARP strain will be performed using a paired t test and reported as a mean
      difference and 95% confidence interval.

      Serum levels of MMP-1, MMP-2, MMP-9 and MMP-1/TIMP ratio, PICP, CITP, Bone Alkaline
      Phosphatase and that of Caspase-3 P17 peptide will be measured as indicators of extracellular
      matrix remodeling and apoptosis, respectively and compared to CMRI and echocardiographic
      parameters of systolic and diastolic function. Serum level of a cleaved p17 fragment (p17) of
      Caspase-3, the end effector caspase for apoptosis, will be compared to published normative
      data from a group of 167 healthy subjects 68. Circulating levels of MMP-1, MMP-2, MMP-9 and
      TIMP-1 will be compared to published historic healthy controls 69 Serum biomarkers N-terminal
      pro-BNP (NT-pro-BNP) and Cardiac troponin will also be obtained given their known association
      with cardiac dysfunction.

      Biomarkers statistical analyses results are expressed as mean and SD for continuous data and
      as percentages and numbers for categorical data. Subjects will be classified into three
      groups as detailed previously. Differences in the means between the groups for all normally
      distributed data will be assessed by analysis of variance. For skewed data, the Mann-Whitney
      U test will be performed. The relationship between levels of Troponin, Caspase-3 P17 peptide,
      MMPS, TIMPs, PICP, CITP, Bone Alkaline Phosphatase, CRP, CK-MB, and echo parameters of
      systolic and diastolic function will be investigated by using linear regression analysis of
      section data. All statistical analysis will be performed with SAS 9.2. All tests are two
      tailed, and P < .05 is considered to indicate a significant difference.

      The interdisciplinary nature and the potential for bedside to bench translational research
      should position us to obtain pilot data based on the projected changes in our patient
      cohorts. For example, we will test whether serum P17 level in any patient groups (groups 1-3)
      is higher than that in healthy controls. However, it is possible that only the late groups
      (Group 2 or 3) will show a rise in P17 level. Similarly, only the late groups may show
      changes in serum MMPs or T1 relaxation time. If any of the change is too small to be detected
      given the sample size, we will focus on parameters exhibiting larger differences vs. healthy
      controls. This will also guide us in designing future study. The change in MMPs may reflect
      presence of diastolic vs. systolic dysfunction in the early vs. late groups. For example, it
      is possible that the early group (Group 1) will exhibit diastolic problem, manifested as a
      reduced MMP-1/TIMP-1 ratio. When significant systolic dysfunction ensues, the ratio may be
      reversed.

      Part B: All CMRI imaging biomarkers of cardiotoxicity demonstrated in the baseline pilot
      study will be compared among the first and second study visits among the high dose (≥240
      mg/m2) subjects. Frequencies and percents of the patients who exhibit the phenotype of
      cardiotoxicity as measured by cMRI will be calculated for each study visit. If the
      frequencies/percents are the same or greater in the second visit as compared to the first,
      then the use of cMRI to indicate anthracycline induced cardiotoxicity can be validated.

      Specific Aim 2: All CMR imaging parameters of athracycline induced cardiomyopathy will be
      compared between the first and second study visits among high dose (≥240 mg/m2) subjects. All
      CMR volumetric parameters including volumes, mass, and measurements of end systolic fiber
      stress as well as measurements of global and regional myocardial function, T1 maps and ECV
      will be compared between the two study visits using paired t-tests, p<0.05 will be used to
      indicate a statistically significant difference.

      Part C:

      Specific Aim 1: To compare CMR parameters of global, and regional systolic function and
      microscopic fibrosis as indicated by changes in T1 mapping-derived relaxation time and
      increase in extracellular volume matrix (ECV) to those of subjects in the high-dose group.

      Overview: The objective of this aim is to test the hypothesis that CMR imaging biomarkers of
      AIC will be less frequent among subjects exposed to low dose anthracyclines. The proportion
      of subjects that possess the anthracycline-induced cardiotoxicity phenotype in both the high
      and low dose groups will be compared using Fisher's exact test. P< 0.05 will be used to
      indicate a statistically significant difference.

      Specific Aim 2: To quantitate serologic biomarkers of inflammation, myocyte injury,
      extracellular matrix remodeling and apoptosis among childhood cancer survivors treated with
      low-dose anthracyclines.

      This aim will tell the hypothesis that elevation of biomarkers of inflammation, myocyte
      injury, extracellular matrix remodeling and apoptosis will be less prevalent in survivors of
      childhood cancer exposed to low-dose anthracyclines, as reflected by lower levels of serum
      CRP, high sensitivity troponin, MMPs and Caspase-3 P17 levels.

      Overview: The objective is to characterize changes in serum levels of markers for
      extracellular matrix remodeling and apoptosis in patients at various intervals after
      anthracycline chemotherapy. Serum levels of MMP-1, MMP-2, MMP-9 and MMP-1/TIMP ratio, PICP,
      CITP, Bone Alkaline Phosphatase and that of Caspase-3 P17 peptide will be measured as
      indicators of extracellular matrix remodeling and apoptosis, respectively and compared to
      CMRI and echocardiographic parameters of systolic and diastolic function. Serum level of a
      cleaved p17 fragment (p17) of Caspase-3, the end effector caspase for apoptosis, will be
      compared to published normative data from a group of 167 healthy subjects (Agosto, Azrin,
      Singh, Jaffe, & Liang, 2011). Circulating levels of MMP-1, MMP-2, MMP-9 and TIMP-1 will be
      compared to normal controls. Serum biomarkers N-terminal pro-BNP (NT-pro-BNP) and Cardiac
      troponin will also be obtained given their known association with cardiac dysfunction. A
      literature review of six small studies suggest that NT-pro-BNP, and Cardiac troponin might
      also be useful markers in the early detection of anthracycline-induced cardiotoxicity
      (Mavinkurve-Groothuis, Kapusta, Nir, & Groot-Loonen, 2008). Of interest, in a larger study
      performed in 122 asymptomatic survivors of childhood cancer, none had abnormal cTnT levels
      and only thirteen percent had abnormal NT-pro-BNP levels (Mavinkurve-Groothuis et al.
      631-36).

      Specfic Aim 3: To compare the results of the DNA/RNA analysis between all subjects with and
      without anthracycline induced cardiomyopathy regardless of cumulative dose. DNA and RNA
      analysis will be collected for future analysis by the Jackson Lab bioinformatics core unit,
      to be analyzed based on the results of a parallel murine model of cardiotoxicity.
observational model: Case-Control
time perspective: Cross-Sectional
measure: To see if a CMRI is better at detecting occult asymptomatic cardiotoxicity
time frame: 2 year
description: Changes in T1 mapping-derived relaxation time and left ventricular myocardial peak circumferential and longitudinal strain magnitude and segmental circumferential strain magnitude are present in asymptomatic post-chemotherapy pediatric patients who have normal standard CMRI parameters. Circumferential strain analysis and measurement of the T1 myocardial relaxation time by CMRI may accurately identify occult cardiovascular dysfunction in patients exposed to high dose anthracyclines.
measure: To quantitate serological markers of diffuse myocardial fibrosis and apoptosis
time frame: 1 year
description: Testing changes in extracellular matrix remodeling and increases in tissue apoptosis occur in asymptomatic post chemotherapy patients
measure: To conduct phenotype analysis of DNA/microRNA of patients exposed to anthracycline
time frame: 1 year
description: Analyzing DNA/microRNA in patients who were treated with high and low dose anthracyclines that may cause cardiotoxicity
intervention type: Other
intervention name: Cardiac MRI
description: Cardiac MRI
study pop: 
sampling method: Non-Probability Sample
criteria: 
gender: All
minimum age: 9 Years
maximum age: 35 Years
healthy volunteers: No
last name: Olga Salazar, MS
role: Principal Investigator
affiliation: Connecticut Childrens Med Ctr
facility: 
country: United States
responsible party type: Principal Investigator
investigator affiliation: Connecticut Children's Medical Center
investigator full name: Olga Salazar
investigator title: Assistant Clinical Professor, Pediatric Cardiology
mesh term: Cardiovascular Diseases
mesh term: Cardiotoxicity
sharing ipd: No