Core Viewpoint - Henlius USA Inc., a wholly-owned subsidiary of the company, has received Orphan-drug Designation from the FDA for HLX43, a targeted PD-L1 antibody-drug conjugate intended for the treatment of thymic epithelial tumors (TETs) [1][2] Group 1: Product Development - HLX43 is a novel antibody-drug conjugate developed by the company, combining a DNA topoisomerase I inhibitor with a self-developed PD-L1 targeting antibody, aimed at treating advanced/metastatic solid tumors [1][2] - The Phase 1 clinical trial data for HLX43, particularly in lung cancer populations, will be updated at the World Conference on Lung Cancer (WCLC) in September 2025, showing a 37.0% objective response rate (ORR) and an 87.0% disease control rate (DCR) in patients with advanced solid tumors [2] Group 2: Regulatory and Market Implications - The Orphan-drug Designation from the FDA will facilitate the subsequent research, registration, and commercialization of HLX43 for TETs in the U.S., providing benefits such as tax credits for clinical trial costs, waiver of new drug application fees, and seven years of market exclusivity post-approval [2] - If other similar drugs for the same indication are approved before HLX43, the company must demonstrate clinical superiority to maintain the market exclusivity benefits associated with the Orphan-drug status [3]
复宏汉霖：注射用HLX43用于胸腺上皮肿瘤治疗获美国食品药品管理局授予孤儿药资格认定