for people ages 18-65 (full criteria)
at Sacramento, California and other locations
study started
estimated completion



The primary objective of this study is to evaluate the safety and tolerability of a combination of the broadly neutralizing antibodies (bNAbs) GS-5423 and GS-2872 in combination with the HIV capsid inhibitor lenacapavir (LEN).

Official Title

A Phase 1b Randomized, Blinded, Proof-of-Concept Study to Evaluate the Safety and Efficacy of Broadly Neutralizing Antibodies (bNAbs) GS-5423 and GS-2872 in Combination With Capsid Inhibitor Lenacapavir (GS-6207) in Virologically Suppressed Adults With HIV-1 Infection


HIV-1 Infection Infections Communicable Diseases HIV Infections Oral Lenacapavir Subcutaneous Lenacapavir Lenacapavir (LEN), GS-5423, GS-2872 Dose C LEN, GS-5423, GS-2872 Dose D


You can join if…

Open to people ages 18-65

  • On first-line antiretroviral therapy (ART) for ≥ 2 years prior to screening. A change in ART regimen ≥ 28 days prior to screening for reasons other than virologic failure (VF) (eg, tolerability, simplification, drug-drug interaction profile) is allowed
  • No documented historical resistance to the current ART regimen
  • Plasma HIV-1 RNA < 50 copies/mL at screening
  • Documented plasma HIV-1 RNA < 50 copies/mL for ≥ 18 months preceding the screening visit (or undetectable HIV-1 RNA level according to the local assay being used if the limit of detection is ≥ 50 copies/mL). Unconfirmed virologic elevations of ≥ 50 copies/mL (transient detectable viremia, or "blip") prior to screening are acceptable.
  • Proviral phenotypic sensitivity to both GS-5423 and GS-2872 at screening
  • CD4+ count nadir ≥ 350 cells/μL
  • Screening CD4+ count ≥ 500 cells/μL
  • Availability of a fully active alternative ART regimen, in the opinion of the investigator, in the event of discontinuation of the current ART regimen with development of resistance

You CAN'T join if...

  • Comorbid condition requiring ongoing immunosuppression
  • Evidence of current hepatitis B virus (HBV) infection
  • Evidence of current hepatitis C virus (HCV) infection (prior infection cleared spontaneously or with treatment is acceptable)
  • History of opportunistic infection or illness indicative of Stage 3 HIV disease

Note: Other protocol defined Inclusion/Exclusion criteria may apply.


  • One Community Health accepting new patients
    Sacramento California 95811 United States
  • Mills Clinical Research accepting new patients
    Los Angeles California 90069 United States


accepting new patients
Start Date
Completion Date
Gilead Sciences
Sign up for this study
Phase 1
Study Type
Last Updated