Nanjing Leads Biolabs Co. Ltd. has announced the initiation of a Phase II clinical trial for Opamtistomig (LBL-024), a PD-L1/4-1BB bispecific antibody, as a first-line treatment for hepatocellular carcinoma. The first patient has been successfully dosed in this open-label, multi-center study, which is led by Professor Jian Zhou of Zhongshan Hospital, Fudan University, and is being conducted across multiple hospitals in China. The company previously received approval from the National Medical Products Administration for a single-arm registrational trial in April 2024, as well as Breakthrough Therapy Designation for LBL-024 in late-line advanced EP-NEC and Orphan Drug Designation from the U.S. FDA for neuroendocrine carcinoma. Results from this trial have not yet been presented.