Ge Long Hui·2025-12-05 00:13Core Insights - IDEAYA Biosciences has received IND approval from the FDA for its first-in-class B7H3/PTK7 bispecific antibody-drug conjugate (ADC) project, IDE034, marking a significant milestone in its collaboration with 百奥赛图-B [1][2] - The clinical trial for IDE034 is expected to begin patient enrollment in Q1 2026, targeting solid tumors co-expressing B7H3 and PTK7, including lung cancer, colorectal cancer, head and neck cancer, and ovarian/gynecological tumors [1][2] Group 1 - The IND approval represents an important advancement in IDEAYA's strategy to expand its first-in-class TOP1 ADC pipeline into bispecific, precision-targeted therapies [2] - The approval validates the company's RenLite® platform and proprietary linker-payload technology in the discovery and optimization of bispecific ADCs [2] - IDE034 has shown deep and durable tumor shrinkage in various B7H3/PTK7 positive tumor models, indicating strong anti-tumor activity [2] Group 2 - IDEAYA plans to explore combination therapy strategies with its PARG inhibitor IDE161 to enhance the durability of treatment effects [2] - The company intends to present more data supporting the combination treatment mechanism of PARG and TOP1 ADC at major medical conferences in the first half of 2026 [2] - The co-expression rates of B7H3 and PTK7 in solid tumors such as lung cancer, colorectal cancer, and head and neck cancer are approximately 30%, 46%, and 27%, respectively, highlighting the broad clinical applicability of IDE034 [2] Group 3 - The company aims to provide high-quality source molecules to partners under its "千鼠万抗" initiative, facilitating the clinical translation of licensed projects [2] - IDEAYA is actively exploring additional external licensing opportunities for early-stage potential assets [2]