Safety, Tolerability, and Pharmacokinetics of Once-Monthly Oral Islatravir: A Phase 2a Study in Participants at Low Risk for Acquiring Human Immunodeficiency Virus Type 1.

ABSTRACT:

Background

Islatravir, a nucleoside reverse transcriptase translocation inhibitor, exhibits high potency against human immunodeficiency virus type 1 (HIV-1), with a long intracellular half-life. The safety, tolerability, and pharmacokinetics of once-monthly oral islatravir were evaluated in adults at low risk of acquiring HIV-1.

Methods

In this double-blind, placebo-controlled trial, participants were randomized 2:2:1 to receive 6 once-monthly doses of islatravir 60 mg, islatravir 120 mg, or placebo. Objectives included assessing safety, tolerability, and pharmacokinetic profiles of islatravir in plasma and its active metabolite, islatravir triphosphate (ISL-TP), in peripheral blood mononuclear cells (PBMCs).

Results

Of 242 participants (islatravir 60 mg, n = 97; isla

SUBMITTER: Hillier SL 

PROVIDER: S-EPMC12614974 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature