Mabwell(SH:688062) Shang Hai Zheng Quan Bao·2025-10-13 19:59Core Viewpoint - The company, Maiwei (Shanghai) Biotechnology Co., Ltd., announced the presentation of clinical research data for its antibody-drug conjugate 7MW3711 at the 2025 European Society for Medical Oncology (ESMO) conference, highlighting its potential in treating advanced solid tumors with promising efficacy and safety profiles [1][2][3]. Group 1: Drug Overview - 7MW3711 is an antibody-drug conjugate targeting B7-H3, designed for advanced malignant solid tumors, with B7-H3 being overexpressed in many cancer types but low in normal tissues [2][3]. - The drug exhibits structural stability, high purity, and ease of industrial scaling, utilizing a novel camptothecin-based toxin that shows superior anti-tumor activity compared to similar drugs [3][4]. - The clinical trial data presented at ESMO indicates that among 54 evaluable patients receiving a dose of 4.0 mg/kg or higher, 19 patients achieved partial or complete responses [1][4]. Group 2: Clinical Trial Results - As of September 15, 2025, a total of 74 patients were enrolled in the I/II phase clinical study, with no dose-limiting toxicities observed and the maximum tolerated dose not yet reached [3][4]. - In the 4.0 mg/kg or higher dose group, the objective response rate (ORR) for esophageal cancer patients was 42.9%, with a disease control rate (DCR) of 100% [1][4]. - For lung cancer patients in the same dose group, the ORR for small cell lung cancer (SCLC) and squamous non-small cell lung cancer (Sq-NSCLC) was 50.0% and 38.5%, respectively, with DCRs of 90.0% and 92.3% [1][4].