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Phase 2 Completed N=20 Treatment

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

OutcomeResultp-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.

View full record on ClinicalTrials.gov →

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.

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