A Safety, Tolerability and Immunogenicity Study of 2 Different Regimens of Tetravalent Ad26.Mos4.HIV Prime Followed by Boost With Tetravalent Ad26.Mos4.HIV Along With Either Clade C gp140 Plus Adjuvant OR With a Combination of Mosaic and Clade C gp140 Plus Adjuvant in Healthy HIV Uninfected Adults

Phase 1

Completed

Conditions: Healthy

Interventions: Other: Placebo
Biological: Ad26.Mos4.HIV
Biological: Clade C gp140/Mosaic gp140 plus adjuvant
Biological: gp140 HIV Bivalent Vaccine
Biological: Clade C gp140 plus adjuvant

Registration Number: NCT02935686

Lead Sponsor: Janssen Vaccines & Prevention B.V.

Brief Summary: The primary purpose of this study is to assess safety/tolerability of the different vaccine regimens and of a late boost vaccination; and to assess envelope (Env)-binding antibody (Ab) responses of the 2 different vaccine regimens.

Detailed Description: This is a randomized (study medication assigned by chance), double-blind (neither physician nor participant knows the treatment received), placebo-controlled (placebo is an inactive substance that is compared with a drug to test whether the drug has a real effect in a clinical trial), parallel-group (each treatment group will be treated at the same time), multicenter (more than one clinical site) study in healthy human immunodeficiency virus (HIV)-uninfected adults. The main study will be conducted in 3 phases: a 6-week screening period; a 48-week vaccination period; and a follow-up period to the final main study visit at Week 72. A Long-term Extension (LTE) phase (approximately 3 years after Week 72) will be performed for participants randomized to Group 1 or Group 2, who receive all 4 vaccinations and are negative for HIV infection at Week 72. The approximate duration of the study will be approximately 78 weeks for participants not participating in the LTE phase and approximately 222 weeks for participants participating in the LTE phase but not receiving a late boost vaccination and approximately 246 (12-month follow-up) or 294 (24-month follow-up) weeks for participants receiving a late boost vaccination. Participants safety will be monitored throughout the study.

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 155

Inclusion Criteria

Participant must be healthy on the basis of medical history, physical examination, and vital signs measurement performed at screening
Participants are negative for human immunodeficiency virus (HIV) infection at screening
Participants are amenable to HIV-risk reduction counseling and committed to maintaining behavior consistent with low risk of HIV exposure through the last required protocol clinic visit
All female participants of childbearing potential must have a negative serum (beta-human chorionic gonadotropin [beta-hCG]) at the screening visit, and a negative urine pregnancy test pre-dose on Day 1
Participants are willing/able to adhere to the prohibitions and restrictions specified in the protocol and study procedures
Participant must be enrolled in the LTE phase to receive the late boost vaccination

Exclusion Criteria

Has chronic hepatitis B (measured by hepatitis B surface antigen test) or active hepatitis C (measured by hepatitis C virus [HCV] Ab test; if positive, HCV ribonucleic acid [RNA] polymerase chain reaction (PCR) test will be used to confirm active versus past HCV infection), active syphilis infection, chlamydia, gonorrhea, or trichomonas
In the 12 months prior to randomization, participant has a history of newly acquired herpes simplex virus type 2 (HSV-2), syphilis, gonorrhea, non-gonococcal urethritis, chlamydia, pelvic inflammatory disease, trichomonas, mucopurulent cervicitis, epididymitis, proctitis, lymphogranulomavenereum, chancroid, or hepatitis B
Participant has had major surgery (eg, requiring general anesthesia) within the 4 weeks before screening, or will not have fully recovered from surgery, or has surgery planned through the course of the study
Participant has had a thyroidectomy or active thyroid disease requiring medication during the last 12 months (not excluded: a stable thyroid supplementation)
Current or past drug/alcohol use that investigator assesses poses any more than a remotely increased risk of the ability of the participant to comply with the protocol requirements
Has been in receipt of any licensed vaccine within 14 days prior to the first dose of study vaccine or placebo, plans to receive within 14 days after the first study vaccination, or plans to receive within 14 days before or after the second, third or fourth vaccination
Is a recipient of a prophylactic or therapeutic HIV vaccine candidate at any time, or a recipient of other experimental vaccine(s) within the last 12 months prior to the Day 1 visit (Vaccination 1). For participants who received an experimental vaccine (except HIV vaccine) more than 12 months prior to the Day 1 visit (Vaccination 1), documentation of the identity of the experimental vaccine must be provided to the sponsor, who will determine eligibility on a case-by-case basis

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Group 2: Ad26.Mos4.HIV + Clade C gp140 + Mosaic gp140	Clade C gp140/Mosaic gp140 plus adjuvant	Participants will receive Ad26.Mos4.HIV vaccine at Week 0 and 12; followed by Ad26.Mos4.HIV vaccine + combination of 125 mcg Mosaic gp140 and 125 mcg Clade C gp140 mixed with adjuvant (aluminum phosphate) at Week 24 and 48. Participants who receive all 4 vaccinations and are negative for HIV infection at Week 72 can consent to be included in a long-term extension (LTE) phase (approximately 3 years after Week 72).
Group 1b: Ad26.Mos4.HIV + gp140 HIV Bivalent Vaccine	gp140 HIV Bivalent Vaccine	Participants enrolled in the LTE phase will receive late boost vaccination Ad26.Mos4.HIV and bivalent gp140 within 4 weeks prior to Week 192 until 4 months after Week 192 (that is, approximately 3 years after the 4th vaccination of the primary vaccination series).
Group 2b: Placebo	Placebo	Participants will receive placebo injection at Week 192 -4 weeks/+4 months, that is, approximately 3 years after the 4th vaccination of the primary vaccination series.
Group 1: Ad26.Mos4.HIV + Clade C gp140	Clade C gp140 plus adjuvant	Participants will receive Ad26.Mos4.HIV vaccine at Week 0 and 12, followed by Ad26.Mos4.HIV vaccine + Clade C glycoprotein 140 vaccine containing 250 microgram (mcg) of total protein mixed with adjuvant (aluminium phosphate) at Week 24 and 48. Participants who receive all 4 vaccinations and are negative for HIV infection at Week 72 can consent to be included in a long-term extension (LTE) phase (approximately 3 years after Week 72).
Group 3: Placebo	Placebo	Participants will receive a single placebo injection at Weeks 0 and 12, followed by two placebo injections at Weeks 24 and 48.
Group 1: Ad26.Mos4.HIV + Clade C gp140	Ad26.Mos4.HIV	Participants will receive Ad26.Mos4.HIV vaccine at Week 0 and 12, followed by Ad26.Mos4.HIV vaccine + Clade C glycoprotein 140 vaccine containing 250 microgram (mcg) of total protein mixed with adjuvant (aluminium phosphate) at Week 24 and 48. Participants who receive all 4 vaccinations and are negative for HIV infection at Week 72 can consent to be included in a long-term extension (LTE) phase (approximately 3 years after Week 72).
Group 2: Ad26.Mos4.HIV + Clade C gp140 + Mosaic gp140	Ad26.Mos4.HIV	Participants will receive Ad26.Mos4.HIV vaccine at Week 0 and 12; followed by Ad26.Mos4.HIV vaccine + combination of 125 mcg Mosaic gp140 and 125 mcg Clade C gp140 mixed with adjuvant (aluminum phosphate) at Week 24 and 48. Participants who receive all 4 vaccinations and are negative for HIV infection at Week 72 can consent to be included in a long-term extension (LTE) phase (approximately 3 years after Week 72).
Group 1b: Ad26.Mos4.HIV + gp140 HIV Bivalent Vaccine	Ad26.Mos4.HIV	Participants enrolled in the LTE phase will receive late boost vaccination Ad26.Mos4.HIV and bivalent gp140 within 4 weeks prior to Week 192 until 4 months after Week 192 (that is, approximately 3 years after the 4th vaccination of the primary vaccination series).

Primary Outcome Measures

Name	Time	Method
Main Study: Number of Participants With Solicited Local and Systemic Adverse Events (AEs) for 7 Days Post-vaccination 1	Up to 7 days post-vaccination 1 on Day 1 (up to Day 8)	Number of participants with solicited local and systemic AEs for 7 days post-vaccination 1 were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the treatment. Solicited AEs were precisely local and systemic events for which the participant is specifically questioned and symptoms of which were noted by participant in their diary. Solicited local AEs included injection site pain/tenderness, erythema, and swelling/induration at the study vaccine injection site. Solicited systemic AEs included fever (temperature measurement), fatigue, headache, nausea, myalgia, and chills.
Main Study: Number of Participants With Solicited Local and Systemic Adverse Events (AEs) for 7 Days Post-vaccination 2	Up to 7 days post vaccination 2 (up to any day from Day 78 to Day 113) (vaccination 2 ranged from Day 78 to 106)	Number of participants with solicited local and systemic AEs for 7 days post-vaccination 2 were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the treatment. Solicited AEs were precisely local and systemic events for which the participant is specifically questioned and symptoms of which were noted by participant in their diary. Solicited local AEs included injection site pain/tenderness, erythema, and swelling/induration at the study vaccine injection site. Solicited systemic AEs included fever (temperature measurement), fatigue, headache, nausea, myalgia, and chills.
Main Study: Number of Participants With Unsolicited Adverse Events (AEs) for 28 Days Post-vaccination 1	Up to 28 days post-vaccination 1 on Day 1 (Up to Day 29)	Number of participants with unsolicited AEs for 28 days post-vaccination 1 were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the treatment. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.
Main Study: Number of Participants With Unsolicited Adverse Events (AEs) for 28 Days Post-vaccination 2	Up to 28 days post vaccination 2 (up to any day from Day 78 to Day 134) (vaccination 2 ranged from Day 78 to 106)	Number of participants with unsolicited AEs for 28 days post-vaccination 2 were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the treatment. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.
Main Study: Number of Participants With Serious Adverse Events (SAEs)	From Baseline (Day 1) up to Week 72	Number of participants with SAEs were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. An SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect; suspected transmission of any infectious agent via a medicinal product or medically important.
Main Study: Number of Participants With Solicited Local and Systemic Adverse Events (AEs) for 7 Days Post-vaccination 3	Up to 7 days post vaccination 3 (up to any day from Day 162 to Day 197) (vaccination 3 ranged from Day 162 to 190)	Number of participants with solicited local and systemic AEs for 7 days post-vaccination 3 were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the treatment. Solicited AEs were precisely local and systemic events for which the participant is specifically questioned and symptoms of which were noted by participant in their diary. Solicited local AEs included injection site pain/tenderness, erythema, and swelling/induration at the study vaccine injection site. Solicited systemic AEs included fever (temperature measurement), fatigue, headache, nausea, myalgia, and chills.
Main Study: Number of Participants With Solicited Local and Systemic Adverse Events (AEs) for 7 Days Post-vaccination 4	Up to 7 days post vaccination 4 (up to any day from Day 330 to Day 365) (vaccination 4 ranged from Day 330 to 358)	Number of participants with solicited local and systemic AEs for 7 days post-vaccination 4 were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the treatment. Solicited AEs were precisely local and systemic events for which the participant is specifically questioned and symptoms of which were noted by participant in their diary. Solicited local AEs included injection site pain/tenderness, erythema, and swelling/induration at the study vaccine injection site. Solicited systemic AEs included fever (temperature measurement), fatigue, headache, nausea, myalgia, and chills.
Main Study: Number of Participants With Unsolicited Adverse Events (AEs) for 28 Days Post-vaccination 3	Up to 28 days post vaccination 3 (up to any day from Day 162 to Day 218) (vaccination 3 ranged from Day 162 to 190)	Number of participants with unsolicited AEs for 28 days post-vaccination 3 were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the treatment. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.
Main Study: Number of Participants With Unsolicited Adverse Events (AEs) for 28 Days Post-vaccination 4	Up to 28 days post vaccination 4 (up to any day from Day 330 to Day 358) (vaccination 4 ranged from Day 330 to 358)	Number of participants with unsolicited AEs for 28 days post-vaccination 4 were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the treatment. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.
Main Study: Number of Participants Who Discontinued Study Vaccination Due to AEs	From Baseline (Day 1) up to Week 72	Number of participants who discontinued study vaccination due to AEs were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the treatment.
Main Study and LTE Study: Number of Participants With Adverse Events of Special Interest (AESIs)	From Baseline (Day 1) up to Week 216	Number of participants with adverse events of special interest (AESIs) were reported. As planned, confirmed HIV infection was the only event assessed as an AESI. AESIs (including potential AESIs) are significant AEs that are judged to be of special interest because of clinical importance, known or suspected class effects, or based on nonclinical signals. AESIs (including potential AESIs) must be reported to the sponsor within 24 hours of awareness irrespective of seriousness (that is, serious and nonserious AEs) or causality.
Late-boost (LB) Vaccination Phase: Number of Participants Who Discontinued Study Due to AEs	From Week 188 up to end of study (Week 288)	Number of participants who discontinued study due to AEs were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the treatment.
Late-boost (LB) Vaccination Phase: Number of Participants With Solicited Local and Systemic Adverse Events (AEs) for 7 Days Post Late Boost Vaccination	Up to 7 days post late boost vaccination (up to any day from Day 1317 to Day 1464) (late boost vaccination ranged from Day 1317 to 1457)	Number of participants with solicited local and systemic AEs for 7 days post late boost vaccination were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the treatment. Solicited AEs were precisely local and systemic events for which the participant is specifically questioned and symptoms of which were noted by participant in their diary. Solicited local AEs included injection site pain/tenderness, erythema, and swelling/induration at the study vaccine injection site. Solicited systemic AEs included fever (temperature measurement), fatigue, headache, nausea, myalgia, and chills.
Late-boost (LB) Vaccination Phase: Number of Participants With Unsolicited Adverse Events (AEs) for 28 Days Post Late Boost Vaccination	Up to 28 days post late boost vaccination (up to any day from Day 1317 to Day 1485) (late boost vaccination ranged from Day 1317 to 1457)	Number of participants with unsolicited AEs for 28 post late boost vaccination were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the treatment. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.
Late-boost (LB) Vaccination Phase: Number of Participants With Serious Adverse Events (SAEs)	From Week 188 up to end of study (Week 288)	Number of participants with SAEs were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. An SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect; suspected transmission of any infectious agent via a medicinal product or medically important.
Late-boost (LB) Vaccination Phase: Number of Participants With AESIs of HIV Infection Up to End of Study	From Week 188 up to end of study (Week 288)	Number of participants with AESIs up to the end of the study were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. AESIs (including potential AESIs) are significant AEs that are judged to be of special interest because of clinical importance, known or suspected class effects, or based on nonclinical signals. AESIs (including potential AESIs) must be reported to the sponsor within 24 hours of awareness irrespective of seriousness (i.e, serious and nonserious AEs) or causality. Confirmed HIV infection was considered an AESI.
Late-boost (LB) Vaccination Phase: Number of Participants With AESIs of Thrombosis With Thrombocytopenia Syndrome (TTS)	Up to 6 months post late boost vaccination (up to any day from Day 1317 to Day 1639) (late boost vaccination ranged from Day 1317 to 1457)	Number of participants with AESIs of TTS were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. AESIs are significant AEs that are judged to be of special interest because of clinical importance, known or suspected class effects, or based on nonclinical signals. AESIs must be reported to the sponsor within 24 hours of awareness irrespective of seriousness (i.e, serious and nonserious AEs) or causality. Thrombotic events and/or thrombocytopenia were considered as AESIs.
Main Study: Geometric Mean of Envelope (Env) Clade A (92UG037.1), B (1990a), C (Con C), (C97ZA.012), Mos 1 Specific Binding Antibodies (Abs) Responses As Assessed Using Enzyme-linked Immunosorbent Assay (ELISA) at Week 28	Week 28	Geometric mean of Env Clade A (92UG037.1), B (1990a), C (Con C), (C97ZA.012), Mos 1 specific binding Abs responses were assessed using ELISA.
Main Study: Geometric Mean of Envelope (Env) Clade A (92UG037.1), B (1990a), C (Con C), (C97ZA.012), Mos 1 Specific Binding Antibodies (Abs) Responses As Assessed Using Enzyme-linked Immunosorbent Assay (ELISA) at Week 52	Week 52	Geometric mean of Env Clade A (92UG037.1), B (1990a), C (Con C), (C97ZA.012), Mos 1 specific binding Abs responses were assessed using ELISA.
Main Study: Geometric Mean of Envelope (Env) Clade A (92UG037.1) B (1990a), C (Con C), (C97ZA.012), Mos 1 Specific Binding Antibodies (Abs) Responses As Assessed Using Enzyme-linked Immunosorbent Assay (ELISA) at Week 72	Week 72	Geometric mean of Env Clade A (92UG037.1) B (1990a), C (Con C), (C97ZA.012), Mos 1 specific binding Abs responses were assessed using ELISA.
Main Study: Percentage of Responders for Envelope (Env)-Specific Binding Antibody Titers at Week 28	Week 28	Percentage of responders for envelop (Env) Clade B (SC42261), Clade C (CH505TF), Clade A (9004S), Clade B (RHPA), Clade B (WITO), Clade C (1086C), Clade C (BF1266), CladeAE (conAE), Clade M(Con S)-specific binding antibody titers assessed using enzyme-linked immunosorbent assay (ELISA) were reported. The response was defined as post-baseline value greater than (\>) lower limit of quantification (LLOQ) if baseline value less than (\<) LLOQ or missing or defined as post-baseline value \>3-fold increase from baseline if baseline value greater than or equal to (\>=) LLOQ.
Main Study: Percentage of Responders for Envelope (Env)-Specific Binding Antibody Titers at Week 52	Week 52	Percentage of responders for envelop (Env) Clade B (SC42261), Clade C (CH505TF), Clade A (9004S), Clade B (RHPA), Clade B (WITO), Clade C (1086C), Clade C (BF1266), CladeAE (conAE), Clade M(Con S)-specific binding antibody titers assessed using enzyme-linked immunosorbent assay (ELISA) were reported. The response was defined as post-baseline value greater than (\>) lower limit of quantification (LLOQ) if baseline value less than (\<) LLOQ or missing or defined as post-baseline value \>3-fold increase from baseline if baseline value greater than or equal to (\>=) LLOQ.
Main Study: Percentage of Responders for Envelope (Env)-Specific Binding Antibody Titers at Week 72	Week 72	Percentage of responders for envelop (Env) Clade B (SC42261), Clade C (CH505TF), Clade A (9004S), Clade B (RHPA), Clade B (WITO), Clade C (1086C), Clade C (BF1266), CladeAE (conAE), Clade M(Con S)-specific binding antibody titers assessed using enzyme-linked immunosorbent assay (ELISA) were reported. The response was defined as post-baseline value greater than (\>) lower limit of quantification (LLOQ) if baseline value less than (\<) LLOQ or missing or defined as post-baseline value \>3-fold increase from baseline if baseline value greater than or equal to (\>=) LLOQ.
Late-boost (LB) Vaccination Phase: Geometric Mean of Envelope (Env) Mos 1 Specific Binding Antibodies (Abs) Response as Assessed Using Enzyme-linked Immunosorbent Assay (ELISA) at Week 192	Week 192	Geometric mean of Env Mos 1 specific binding Abs response at Week 192 were assessed using ELISA.
Late-boost (LB) Vaccination Phase: Geometric Mean of Envelope (Env) Mos 1 Specific Binding Antibodies (Abs) Response as Assessed Using Enzyme-linked Immunosorbent Assay (ELISA) at Week 193	Week 193	Geometric Mean of Env Mos 1 specific binding Abs response at Week 193 were assessed using ELISA.
Late-boost (LB) Vaccination Phase: Geometric Mean of Envelope (Env) Mos 1 Specific Binding Antibodies (Abs) Response as Assessed Using Enzyme-linked Immunosorbent Assay (ELISA) at Week 196	Week 196	Geometric mean of Env Mos 1 specific binding Abs response at Week 196 were assessed using ELISA.
Late-boost (LB) Vaccination Phase: Geometric Mean of Envelope (Env) Mos 1 Specific Binding Antibodies (Abs) Response as Assessed Using Enzyme-linked Immunosorbent Assay (ELISA) at Week 204	Week 204	Geometric mean of Env Mos 1 specific binding Abs response at Week 204 were assessed using ELISA.
Late-boost (LB) Vaccination Phase: Geometric Mean of Envelope (Env) Mos 1 Specific Binding Antibodies (Abs) Response as Assessed Using Enzyme-linked Immunosorbent Assay (ELISA) at Week 216	Week 216	Geometric mean of Env Mos 1 specific binding Abs response at Week 216 were assessed using ELISA.
Late-boost (LB) Vaccination Phase: Geometric Mean of Envelope (Env) Mos 1 Specific Binding Antibodies (Abs) Response as Assessed Using Enzyme-linked Immunosorbent Assay (ELISA) at Week 240	Week 240	Geometric mean of Env Mos 1 specific binding Abs response at Week 240 were assessed using ELISA.
Late-boost (LB) Vaccination Phase: Geometric Mean of Envelope (Env) Mos 1 Specific Binding Antibodies (Abs) Response as Assessed Using Enzyme-linked Immunosorbent Assay (ELISA) at Week 288	Week 288	Geometric mean of Env Mos 1 specific binding Abs response at Week 288 were assessed using ELISA.

Secondary Outcome Measures

Name	Time	Method
Main Study: Percentage of Responders of Env-Specific Neutralizing Antibody (nAbs) for Tier 1 Viruses	Weeks 28, 52, and 72 (only for Clade C [MW965])	Percentage of responders of Env-specific nAbs for tier 1 viruses were reported. Viruses with a Tier 1 neutralization phenotype: Clade C: MW965 and 97ZA012, ZM233M, CE703010010, 2759058, ZM215F, SO431, CE704810053 were used. The response was defined as post-baseline value \>LLOQ.
Long-term Extension (LTE) Phase: Percentage of Responders for Env-Specific Functional Antibody Response (Env ADCP gp140)	From Week 72 up to Week 216	Percentage of responders for Env-specific functional antibody response (Env ADCP gp140) were planned to be reported.
Late-boost (LB) Vaccination Phase: Percentage of Responders for Env-Specific Binding Ab Isotypes (Immunoglobulin [Ig] G1 and IgG3)	From Week 188 up to end of study (Week 288)	Percentage of responders for Env-specific binding Ab isotypes IgG1 and IgG3) were planned to be reported.
Main Study: Percentage of Interferon (IFN)-Gamma Peripheral Blood Mononuclear Cell (PBMC) Responders to Mosaic and Potential T-cell Epitope (PTE) Peptide Pools of Env/Group-Specific Antigen (Gag)/ Polymerase (Pol)	Weeks 28, 52, and 72	Percentage of IFN-gamma PBMC responders to mosaic and PTE peptide pools of Env/Gag/Pol as assessed by ELISpot was reported. The response was defined as post-baseline value \>P95 if baseline \<P95 or missing or defined as post-baseline value \>3-fold increase from baseline if baseline \>=P95.
Long-term Extension (LTE) Phase: Percentage of Interferon (IFN)-Gamma Peripheral Blood Mononuclear Cell (PBMC) Responders to Mosaic and Potential T-cell Epitope (PTE) Peptide Pools of Env/Group-Specific Antigen (Gag)/ Polymerase (Pol)	From Week 72 up to Week 216	Percentage of Interferon (IFN)-Gamma PBMC responders to Mosaic and Potential T-cell Epitope (PTE) Peptide Pools of Env/Group-Specific Antigen (Gag)/ Polymerase (Pol) was planned to be reported.
Long-term Extension (LTE) Phase: Percentage of Responders of Env-Specific Neutralizing Antibody (nAbs) for Tier 1 Viruses	From Week 72 to Week 216	Percentage of responders of Env-specific nAbs for tier 1 viruses were planned to be reported.
Late-boost (LB) Vaccination Phase: Percentage of Responders of Env-Specific Neutralizing Antibody (nAbs) for Tier 1 Viruses	From Week 188 up to end of study (Week 288)	Percentage of responders of Env-specific nAbs for tier 1 viruses were planned to be reported.
Main Study: Percentage of Responders for Env-Specific Functional Antibody Response (Env ADCP gp140)	Weeks 28, 52, and 72 (Weeks 52 and 72 are only for HIV ENV [gp140 T sortA] C [ZA] F Ab)	Percentage of responders for Env-specific functional antibody response (Env ADCP gp140) were reported. The response was defined as post-baseline value \> limit of detection (LOD) if baseline value \<LOD or missing or defined as post-baseline value \>3-fold increase from baseline if baseline value \>=LOD. The lower limits of detection (LODs) for this assay were 5.16, 6.43, 6.49, 4.32 and 4.28 (phagocytic score) for Clade A (92UG037.1), Clade B (1990a), Clade C (Con C), Clade C (ZA), and Mos1, respectively.
Main Study: Percentage of Participants With T-Cell Development	From Baseline (Day 1) up to Week 72	Percentage of participants with T-Cell development were planned to be reported.
Long-term Extension (LTE) Phase: Percentage of Participants With T-Cell Development	From Week 72 up to Week 216	Percentage of participants with T-Cell development were planned to be reported.
Late-boost (LB) Vaccination Phase: Percentage of Participants With T-Cell Development	From Week 188 up to end of study (Week 288)	Percentage of participants with T-Cell Development were planned to be reported.
Late-boost (LB) Vaccination Phase: Percentage of Responders for Env-Specific Functional Antibody Response (Env ADCP gp140)	From Week 188 up to end of study (Week 288)	Percentage of responders for Env-specific functional antibody response (Env ADCP gp140) were planned to be reported.
Main Study: Percentage of Responders for Env-Specific Binding Ab Isotypes (Immunoglobulin [Ig] G1 and IgG3)	Weeks 28, 52, and 72	Percentage of responders for Env-specific binding Ab isotypes (IgG1 and IgG3) for Clade C (ZA) as assessed using ELISA were reported. The response was defined as post-baseline value \>LLOQ if baseline \<LLOQ or missing or defined as post-baseline value \>3-fold increase from baseline if baseline \>=LLOQ. The LLOQs for this assay were 12.3 and 12.4 EC50 for IgG1 and IgG3, respectively. EC50= 50% effective concentration.
Long-term Extension (LTE) Phase: Percentage of Responders for Env-Specific Binding Ab Isotypes (Immunoglobulin [Ig] G1 and IgG3)	From Week 72 up to Week 216	Percentage of responders for Env-specific binding Ab isotypes IgG1 and IgG3) were planned to be reported.
Late-boost (LB) Vaccination Phase: Percentage of Interferon (IFN)-Gamma Peripheral Blood Mononuclear Cell (PBMC) Responders to Mosaic and Potential T-cell Epitope (PTE) Peptide Pools of Env/Group-Specific Antigen (Gag)/ Polymerase (Pol)	From Week 188 up to end of study (Week 288)	Percentage of Interferon (IFN)-Gamma PBMC responders to Mosaic and Potential T-cell Epitope (PTE) Peptide Pools of Env/Group-Specific Antigen (Gag)/ Polymerase (Pol) were planned to be reported.
Main Study: Percentage of Responders With Cluster of Differentiation (CD)4+ and CD8+ T-Cell Functionality	Weeks 28, 52, and 72	Percentage of responders with CD4+ and CD8+ T-cell functionality (cells producing IFN-gamma and /or IL-2) were reported. Intracellular cytokine staining (ICS) was performed to examine the type of T-cell responding to vaccination. Responder definition was based on the Fisher's exact text between cytokine producing cells and non-producing cells in stimulated versus non-stimulated conditions.
Long-term Extension (LTE) Phase: Percentage of Responders With Cluster of Differentiation (CD)4+ and CD8+ T-Cell Functionality	From Week 72 up to Week 216	Percentage of Responders With Cluster of Differentiation (CD)4+ and CD8+ T-Cell Functionality (cells Producing IFN-Gamma and/or Interleukin \[IL-2\]) were planned to be reported. Intracellular cytokine staining (ICS) was performed to examine the type of T-cell responding to vaccination. Responder definition was based on the Fisher's exact text between cytokine producing cells and non-producing cells in stimulated versus non-stimulated conditions.
Late-boost (LB) Vaccination Phase: Percentage of Responders With Cluster of Differentiation (CD)4+ and CD8+ T-Cell Functionality	Weeks 192 and 196	Percentage of responders with CD4+ and CD8+ T-cell functionality (cells producing IFN-gamma and /or IL-2) were reported. Intracellular cytokine staining (ICS) was performed to examine the type of T-cell responding to vaccination. Responder definition was based on the Fisher's exact text between cytokine producing cells and non-producing cells in stimulated versus non-stimulated conditions.

Trial Locations

Locations (13): Bridge HIV
🇺🇸
San Francisco, California, United States
The Hope Clinic at Emory University
🇺🇸
Decatur, Georgia, United States
Brigham And Women's Hospital
🇺🇸
Boston, Massachusetts, United States
Alabama Vaccine Research Clinic at UAB
🇺🇸
Birmingham, Alabama, United States
Beth Israel Deaconess Medical Center
🇺🇸
Boston, Massachusetts, United States
Fenway Health
🇺🇸
Boston, Massachusetts, United States
Columbia University HIV Vaccine Unit
🇺🇸
New York, New York, United States
Walter Reed Project Clinical Research Center
🇰🇪
Kericho, Kenya
New York Blood Center
🇺🇸
New York, New York, United States
Strong Memorial Infectious Disease
🇺🇸
Rochester, New York, United States
Seattle Vaccine Trials Unit
🇺🇸
Seattle, Washington, United States
University of Pennsylvania
🇺🇸
Philadelphia, Pennsylvania, United States
Center for Family Health Research/Project San Francisco
🇷🇼
Kigali, Rwanda