United BioPharma (UBP) announced today that they have received Investigational New Drug (IND) approval from the China National Medical Products Administration (NMPA) to conduct a Phase 3 clinical trial with UB-421, an anti-CD4 monoclonal antibody, in patients with multi-drug resistant (MDR) HIV-1 infection. The study is a multi-nation trial which will include Taiwan and China; the same protocol was approved earlier this year by TFDA.