FGFR3 Degrader

LC-MF-4 is a selective FGFR3 PROTAC degrader with a DC₅₀ of 30.89 nM in KMS-11 cells. LC-MF-4 inhibits the metabolic function of FGFR3-TACC3 fusion positive cancers with reduction of ATP synthesis and inhibition of mitochondrial biogenesis genes. LC-MF-4 has potent antitumor activity in the Ba/F3-FGFR3-TACC3 xenograft mice model. LC-MF-4 can be used for FGFR3-altered cancers like bladder cancer and urothelial carcinoma (UC) research. Pink: FGFR3 ligand (HY-175414); Blue: VHL ligase ligand (HY-125905); Black: linker (HY-Y1224)

CYB-5067 is a FGFR molecular glue degrader with a DC₅₀ of 27 nM against FGFR2. CYB-5067 inhibits FGFR1, FGFR3, FGFR4 and downstream FGFR signaling pathways, induces antiproliferative activity in vitro, and exhibits sustained target protein inhibition in vivo without obvious hook effect. CYB-5067 shows significant tumor growth inhibitory activity in the ETV6-FGFR2 fusion Ba/F3 xenograft model. CYB-5067 can be used for the research of FGFR-driven cancers.