CBX

 Beigene has registered a Phase 1 clinical trial ( NCT06233942 ) of BG-C9074, an anti-B7H4 antibody-drug conjugate (ADC), as monotherapy or in combination with tislelizumab: enrolling approximately 150 patients with pretreated solid tumors. The study (still no IND application submission in China yet) is estimated to start in May 2024, which is in line with the target for 2024 H1. BG-C9074 According to the Beigene slide deck, BG-C9074, a novel B7-H4-targeted ADC with a drug-to-antibody ratio (DAR) of 6 , is designed to balance efficacy and toxicity, utilizing DualityBio ADC technology.  BG-C9074 The efficacy of BG-C9074 was evaluated in a B7-H4 low/heterogeneous PDX model, as measured by tumor volume reduction. The 10 mpk dose resulted in a greater degree of tumor shrinkage compared to the 3 mpk dose. B7-H4 low/heterogeneous PDX model In addition to BG-C9074, Beigene plans to initiate another ADC targeting B7-H3 with stable DAR8 and a strong bystander effect. -------------------------