Pharmacokinetic Study of Cabotegravir and Rilpivirine Long-acting Intramuscular Injections in Healthy Adult Participants

This is a phase 1, open label study in healthy participants to assess the pharmacokinetics of cabotegravir and rilpivirine in plasma following the administration of a single 600 milligram (mg) and a 900 mg intramuscular (IM) injection respectively, to separate vastus lateralis muscles on each leg. Cabotegravir is an integrase inhibitor being developed in combination with rilpivirine, a non-nucleoside reverse transcriptase inhibitor, for the treatment of human immunodeficiency virus (HIV). The objective is to evaluate pharmacokinetics, tolerability, and safety of cabotegravir long acting plus rilpivirine long acting administered concomitantly as two separate IM injections in the vastus lateralis muscle of adult healthy participants. The screening phase will be of 30 days, oral lead-in (OLI) phase of 28 days, there will be washout period of 10-14 days, followed by an injection phase and follow-up period will be up to 52-weeks. Approximately 15 adult healthy participants will be enrolled.