Phase Ib/IIa Clinical Study of ACC017 Tablets

This phase Ib/IIa study in HIV-infected antiretroviral naive adult subjects is conducted to evaluate the safety, tolerability, pharmacokinetics and antiviral effect of ACC017 tablet as monotherapy/combination with NRTIs and to explore the recommended dose for the future pivotal clinical trial of ACC017. The study will be conducted as two stages. Stage one will includes a dose-ranging evaluation of ACC017 5mg, 40mg and 80mg once daily compared to placebo on the basis of safety, tolerability, pharmacokinetics and antiviral activity. Subjects will be randomized in a 5:1 ratio to receive one of three doses of ACC017 or placebo. Each subject will receive ACC017 tablet as monotherapy for 10 days and then followed by a combination with NRTIs for 18 days. In monotherapy, the enrolment into the next higher dose group will commence only when investigator and sponsor both agree that ACC017 is safe and well tolerated at a given dose. Stage two is open and subjects will continue to take ACC017 at the dose given on stage one in combination with FTC/TAF tablet at 200 mg/25 mg once daily for 18 days. Subjects randomized to receive placebo in stage one will receive the equivalent dose of ACC017 combined with FTC/TAF.