Lee's Pharmaceutical Holdings Limited, a subsidiary of Sorrento Therapeutics, has completed the enrollment of 498 patients for a Phase III clinical trial of Socazolimab, an anti-PD-L1 monoclonal antibody, combined with chemotherapy for the first-line treatment of extensive-stage small-cell lung cancer (ES-SCLC). The trial, involving 54 centers across China, is led by Prof. Shun Lu from Shanghai Chest Hospital, with an interim analysis expected in April 2023.