This study will evaluate the safety, tolerability, and serum concentrations of a human monoclonal antibody, VRC-HIVMAB075-00-AB (VRC07-523LS), administered in multiple doses and routes to healthy, HIV-uninfected adults.~Participants will be randomly assigned to one of six groups. Participants in Group 1 will receive 2.5 mg/kg of VRC07-523LS by intravenous (IV) infusion at Weeks 0, 16, 32, 48, and 64. Participants in Group 2 will receive 5 mg/kg of VRC07-523LS by IV infusion at Weeks 0, 16, 32, 48, and 64. Participants in Group 3 will receive 20 mg/kg of VRC07-523LS by IV infusion at Weeks 0, 16, 32, 48, and 64. Participants in Group 4 will receive 2.5 mg/kg of VRC07-523LS by subcutaneous (SC) injection at Weeks 0, 16, 32, 48, and 64. Participants in Group 5 will receive 5 mg/kg of VRC07-523LS by SC injection at Weeks 0, 16, 32, 48, and 64. Participants in Group 6 will receive 2.5 mg/kg of VRC07-523LS or placebo by intramuscular (IM) injection at Weeks 0, 16, 32, 48, and 64.~Participants will attend numerous study visits throughout the course of the study, beginning at Week 0 through Week 112. Visits may include physical examinations, blood and urine collection, HIV testing, risk reduction counseling, and questionnaires.
The purpose of this study is to evaluate the safety, tolerability, and serum concentrations of a human monoclonal antibody, VRC-HIVMAB075-00-AB (VRC07-523LS), administered in multiple doses and routes to healthy, HIV-uninfected adults.