Burning Rock Biotech Limited announced a strategic partnership with Abbisko Therapeutics (“Abbisko”) in companion diagnostics (CDx). The two companies will work together to develop a CDx assay for ABSK091 (formerly known as AZD4547) to advance clinical research and development of the drug. The CDx assay is designed to detect FGFR genetic alterations in patients with urothelial carcinoma. ABSK091 is an innovative small molecule FGFR inhibitor, of which Abbisko has the exclusive global rights for development, manufacture, and commercialization. In prior preclinical and multiple clinical studies, ABSK091 has demonstrated good safety and tolerability profiles, as well as preliminary efficacy in cancer patients harboring FGFR alterations.