Core Viewpoint - The company Valiant Biopharma-B (09887) has received Fast Track designation from the FDA for its PD-L1/4-1BB bispecific antibody, Valiant (Opatasumab, LBL-024), aimed at treating pulmonary neuroendocrine carcinoma, which accelerates the drug development process for serious conditions [1][2]. Group 1: Drug Development and Regulatory Milestones - Valiant is the first bispecific antibody targeting both PD-L1 and 4-1BB to reach the registration clinical stage for pulmonary neuroendocrine carcinoma [2]. - The Fast Track designation allows for more frequent regulatory interactions and the ability to submit a rolling New Drug Application (NDA) [1]. - The company has received Breakthrough Therapy Designation (BTD) from the NMPA for Valiant in treating advanced pulmonary neuroendocrine carcinoma, and Orphan Drug Designation (ODD) from the FDA for neuroendocrine carcinoma [2]. Group 2: Clinical Efficacy and Safety - In clinical trials in China, Valiant has shown promising efficacy signals and good safety profiles as both a monotherapy and in combination with chemotherapy for advanced pulmonary neuroendocrine carcinoma [2]. - The drug exhibits strong clinical activity potential in multiple indications, including non-small cell lung cancer, small cell lung cancer, and pulmonary neuroendocrine carcinoma [2]. - Valiant's design aims to overcome PD-1/L1 immune suppression and enhance T cell activation, indicating a broader cancer treatment potential compared to PD-1/L1 inhibitors [2]. Group 3: Broader Implications and Future Potential - 4-1BB as an agonist can reactivate exhausted T cells, making it suitable for treating "cold tumors" resistant to PD-1/PD-L1 therapies [3]. - Valiant has shown encouraging clinical signals in various cancers with unmet medical needs, including small cell lung cancer, cholangiocarcinoma, ovarian cancer, and triple-negative breast cancer [3]. - The drug is positioned to become a promising anti-tumor agent across a wide range of indications [3].
维立志博-B(09887)：维利信?(PD-L1/4-1BB双特异性抗体奥帕替苏米单抗，LBL-024)获美国FDA授予快速通道资格认定