A Phase 2 Study of GS-5423 and GS-2872 in Combination With Capsid Inhibitor Lenacapavir in Virologically Suppressed Adults With HIV-1 Infection

The goal of this study is to test the effectiveness, safety, and tolerability of the combination of broadly neutralizing antibodies (bNAbs) (teropavimab (formerly GS-5423) and zinlirvimab (formerly GS-2872)) with lenacapavir (LEN) in virologically suppressed adults with HIV-1 infection.

Key Inclusion Criteria:On stable oral antiretroviral therapy (ART) consisting of no more than 2 drug classes (with the exception of pharmacologic boosters cobicistat or ritonavir) for ≥ 1 year 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 clinically significant documented historical resistance to the current ART regimen with the exception of isolated nucleoside reverse transcriptase inhibitor mutations including M184V or ≤ 2 thymidine analog mutations (TAMs: M41L, D67N, K70R, L210W, T215Y, and/or K219Q).Plasma HIV-1 RNA < 50 copies/mL at screening.Documented plasma HIV-1 RNA < 50 copies/mL for ≥ 12 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). Virologic elevations of ≥ 50 copies/mL (transient detectable viremia or "blips") prior to screening are acceptable.Proviral pheynotypic sensitivity to both teropavimab and zinlirvimab at screening or from protocol GS-US-536-5816 within 24 months prior to screening.Screening CD4+ T-cell count ≥ 200 cells/μL.Key Exclusion Criteria:Comorbid condition requiring ongoing immunosuppression.Evidence of hepatitis C virus (HCV) infection (prior infection cleared spontaneously or with treatment is acceptable)Evidence of current hepatitis B virus (HBV) infection regardless of HBV surface antigen status, at the screening visit.History of opportunistic infection or illness indicative of Stage 3 HIV disease.Note: Other protocol defined Inclusion/Exclusion criteria may apply.