Phase 2
Completed N=20
Study of VRC07-523LS, CAP256V2LS, and Vesatolimod, in Early Antiretroviral-treated HIV-1 Clade C-infected Women
HIV-1-infection
Source: ClinicalTrials.gov NCT05281510 ↗
Enrolled (actual)
20
Serious AEs
10.0%
Results posted
Jan 2026
Primary outcomePrimary: Percentage of Participants Experiencing Treatment-emergent Adverse Events (TEAEs) — 95 percentage of participants
Summary
The goals of this clinical study are to learn more about the study drugs, VRC07-523LS, CAP256V2LS, and vesatolimod (VES) and how safe it is in women that have HIV and are on antiretroviral therapy (ART).
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Percentage of Participants Experiencing Treatment-emergent Adverse Events (TEAEs) |
95 | — |
| PRIMARY Percentage of Participants Experiencing Treatment-emergent Graded Laboratory Abnormalities |
95; 20; 40; 35; 0 | — |
| SECONDARY Time to Viral Rebound (Confirmed ≥ 50 Copies/mL and ≥ 200 Copies/mL) Following ATI |
11.00; 11.00 | — |
| SECONDARY Change in Plasma Viral Load Set-point Following ATI |
-1.42 | 0.0020 sig |
| SECONDARY Change From Baseline of Viral Load at the End of ATI |
2.96 | — |
| SECONDARY Time to ART Resumption Following ATI |
24.21 | — |
| SECONDARY Pharmacokinetic (PK) Parameter of VES: Cmax |
6350 | — |
| SECONDARY PK Parameter of VES: Tmax |
2.00 | — |
| SECONDARY PK Parameter of VES: Clast |
279 | — |
| SECONDARY PK Parameter of VES: Tlast |
48.0 | — |
| SECONDARY PK Parameter of VES: AUCinf |
62700 | — |
| SECONDARY PK Parameter of VES: AUClast |
55500 | — |
| SECONDARY PK Parameter of VES: AUCexp |
12.4 | — |
| SECONDARY PK Parameter of VES: t1/2 |
15.9 | — |
| SECONDARY PK Parameter of VES: CL/F |
144 | — |
| SECONDARY PK Parameter of VES: Vz/F |
3810 | — |
| SECONDARY PK Parameter of VRC07-523LS: Cmax |
481 | — |
| SECONDARY PK Parameter of VRC07-523LS: Tmax |
0.550 | — |
| SECONDARY PK Parameter of VRC07-523LS: Clast |
3.51 | — |
| SECONDARY PK Parameter of VRC07-523LS: Tlast |
238 | — |
| SECONDARY PK Parameter of VRC07-523LS: AUCinf |
7540 | — |
| SECONDARY PK Parameter of VRC07-523LS: AUClast |
7320 | — |
| SECONDARY PK Parameter of VRC07-523LS: AUCexp |
2.94 | — |
| SECONDARY PK Parameter of VRC07-523LS: t1/2 |
41.9 | — |
| SECONDARY PK Parameter of VRC07-523LS: Clearance (CL) |
0.198 | — |
| SECONDARY PK Parameter of VRC07-523LS: Vss |
11.5 | — |
| SECONDARY PK Parameter of VRC07-523LS: Vz |
12.0 | — |
| SECONDARY PK Parameter of CAP256V2LS: Cmax |
644 | — |
| SECONDARY PK Parameter of CAP256V2LS: Tmax |
1.50 | — |
| SECONDARY PK Parameter of CAP256V2LS: Clast |
1.52 | — |
| SECONDARY PK Parameter of CAP256V2LS: Tlast |
172 | — |
| SECONDARY PK Parameter of CAP256V2LS: AUCinf |
4290 | — |
| SECONDARY PK Parameter of CAP256V2LS: AUClast |
4230 | — |
| SECONDARY PK Parameter of CAP256V2LS: AUCexp |
1.58 | — |
| SECONDARY PK Parameter of CAP256V2LS: t1/2 |
31.4 | — |
| SECONDARY PK Parameter of CAP256V2LS: CL |
0.352 | — |
| SECONDARY PK Parameter of CAP256V2LS: Vz |
15.3 | — |
| SECONDARY PK Parameter of CAP256V2LS: Vss |
10.6 | — |
| SECONDARY Percentage of Participants With Treatment-emergent Positive Anti-VRC07-523LS Antibodies |
15.0 | — |
| SECONDARY Percentage of Participants With Treatment-emergent Positive Anti-CAP256V2LS Antibodies |
55 | — |
Eligibility Criteria
Key Inclusion Criteria
- Age ≥ 18 years
- Females recruited from the Females Rising through Education, Support, and Health (FRESH) acute human immunodeficiency virus (HIV) infection cohort.
- Plasma human immunodeficiency -1 (HIV-1) ribonucleic acid (RNA) levels < 50 copies/mL at the screening visit.
- On antiretroviral (ART) regimen for ≥ 12 consecutive months prior to the screening visit.
- Have all the following laboratory values at the screening visit:
- Hemoglobin ≥ 10.0 g/dL
- White blood cells ≥ 2500 cells/μL
- Platelets ≥ 125,000/mL
- Absolute neutrophil counts ≥ 1000 cells/μL
- Cluster of differentiation (CD)4+ T cell count ≥ 500 cells/μL
- Alanine aminotransferase (ALT), aspartate aminotransferase (AST), and bilirubin ≤ 2 × upper limit of normal (ULN)
- Creatinine clearance ≥ 60 mL/min
- Women of childbearing potential to have documentation of agreement to follow study contraceptive requirements.
- Documented plasma HIV-1 RNA < 50 copies/mL for 12 consecutive months prior to the screening visit.
- In the judgment of the investigator, be in good general health.
- Documented history of viral sensitivity to VRC07-523LS or CAP256V2LS at the screening visit.
Key Exclusion Criteria
- Have poor venous access that limits phlebotomy.
- Positive serum pregnancy test.
- Nursing participants.
- Females with coinfection and/or immunosuppression as described below:
- Autoimmune disease requiring ongoing immunosuppression
- Evidence of chronic hepatitis B virus (HBV) infection
- Evidence of current hepatitis C virus (HCV) infection
- Documented history of pre-ART CD4+ T cell count nadir < 200 cells/μL
- History of opportunistic illness indicative of Stage 3 HIV
- Acute febrile illness within 4 weeks prior to the first dose
- Have current alcohol or substance abuse judged by the investigator to potentially interfere with individual's compliance or individual's safety.
- Have been treated with systemic steroids, immunosuppressant therapies, or chemotherapeutic agents within 3 months prior to screening or are expected to receive these agents during the study.
- Have previous or current receipt of humanized or human monoclonal antibody (mAbs), or polyclonal immunoglobulin.
- Have previous history of an antidrug antibodies response to a therapeutic agent.
- Have previous receipt of an HIV vaccine.
- Received any vaccine or immunomodulatory medication within 4 weeks prior to screening.
- Have a history of any of the following:
- Significant serious skin disease
- Significant drug sensitivity or drug allergy
- Known hypersensitivity to the study drugs, metabolites, or formulation excipients
- Previous or current history of bleeding disorder, platelet disorder including unexplained acute or chronic thrombocytopenia
- Autoimmune diseases including type 1 diabetes mellitus
- Have current Class C acquired immunodeficiency syndrome (AIDS)-defining condition.
- Have any serious or active medical or psychiatric illness that would interfere with participants treatment, assessment, or compliance with the protocol.
Note: Other protocol defined Inclusion/Exclusion criteria may apply.
Data sourced from ClinicalTrials.gov (NCT05281510). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication. Informational only — not medical advice.