Leads Biolabs’ Opamtistomig (PD-L1/4-1BB Bispecific Antibody) Advances to Expansion Phase in First-Line Biliary Tract Cancer Following Positive Safety and Preliminary Efficacy ResultsNANJING, China, April 09, 2026 (GLOBE NEWSWIRE) -- Nanjing Leads Biolabs Co., Ltd. (“Leads Biolabs” or the “Company,” Stock Code: 9887.HK) announced that its proprietary PD-L1/4-1BB bispecific antibody, Opamtistomig (LBL-024), has successfully completed the safety run-in stage of a Phase II clinical trial in the first-line treatment of advanced biliary tract cancer (BTC). Based on favorable safety and encouraging preliminary efficacy data, the study has progressed into the expansion phase, with the first patient already enrolled.
