CH5183284

Debio-1347, also known as FF284 and CH5183284, is an orally bioavailable inhibitor of the fibroblast growth factor receptor subtypes 1 (FGFR-1), 2 (FGFR-2) and 3 (FGFR-3), with potential antineoplastic activity. FGFR inhibitor debio 1347 binds to and inhibits FGFR-1, -2, and -3, which result in the inhibition of FGFR-mediated signal transduction pathways. This leads to the inhibition of both tumor cell proliferation and angiogenesis, and causes cell death in FGFR-overexpressing tumor cells. (In Vitro) :Zoligratinib is well balanced in cellular antiproliferative activity against SNU-16 and stability in human liver microsome. The selectivity of 8 to inhibit FGFR over KDR is suggested to be caused by the difference in the interaction with M535 in FGFR1 and L889 in KDR. The IC50 of Zoligratinib is 29 nM for FGF-dependent proliferation and 780 nM for VEGF-dependent proliferation. (In Vivo) :Zoligratinib treatment shows a dose-dependent tumor regression (tumor growth inhibition (TGI) =106% at 30 mg/kg and 147% at 100 mg/kg) without apparent body weight loss. Zoligratinib treatment also shows significant in vivo efficacy in xenograft mice models with FGFR genetic alterations, such as KG1 (leukemia, FGFR1OP-FGFR1 fusion), MFE280 (endometrial cancer, FGFR2 S252W mutation), UM-UC-14 (bladder cancer, FGFR3 S249C mutation), and RT112/84 (bladder cancer, FGFR3-TACC3 fusion) .