A Proof of Concept Study to Evaluate the Effect of UB-421 in Combination With Chidamide on HIV Viral Reservoir

10mg/kg weekly intravenous infusion to substitute for for antiretroviral therapy

10 mg/kg UB-421 weekly intravenous infusion to substitute for antiretroviral therapy, and combined with oral 10 mg chidamide twice a week for 8 weeks. Chidamide taken on the one day and three days after the administration of UB-421.