Leads Biolabs’ Opamtistomig (PD-L1/4-1BB Bispecific Antibody) Advances to Expansion Phase in First-Line Hepatocellular Carcinoma Following Positive Efficacy Signals

NANJING, China, Aug. 05, 2026 (GLOBE NEWSWIRE) -- Nanjing Leads Biolabs Co., Ltd. (“Leads Biolabs” or the “Company,” Stock Code: 9887.HK) today announced that its Phase II clinical study evaluating Opamtistomig (LBL-024), a proprietary PD-L1/4-1BB bispecific antibody, in combination with bevacizumab for the treatment of first-line hepatocellular carcinoma (HCC) has successfully completed the safety run-in phase assessment following expert review and has advanced into the expansion phase. The study is led by Professor Zhou Jian, President of Zhongshan Hospital, Fudan University, and Academician of the Chinese Academy of Sciences.