Description
Biochem/physiol Actions
Orally active, type II tyrosine kinase I inhibitor against VEGFR1/2 (FLT1/KDR), PDGFR1/2, KIT, and ROS1 oncogenic fusions/mutations-drivent growth.
CHZ868 is a type II tyrosine kinase inhibitor that exhibits potent antiproliferation activity against VEGFR1/2 (FLT1/KDR), PDGFR1/2, KIT, and ROS1 TEL fusions-, as well as JAK2 V617F, but not RAF V600E, mutation-driven oncogenic growth (IC50 = 2/11, 4/23, 16, 40, 51 against respective BaF3 transformants) via stablizing target kinases in the inactive “DFG-out” conformation. CHZ868 overcomes Type I JAK inhibitor resistance of JAK2/MPN mutant MPN and JAK2 I682F/CRLF2-rearranged B-ALL cells both in cultures and in mice in vivo (30-40 mg/kg/day p.o.). Comparing to BBT594, CHZ868 is ineffective against BCR-ABL, TEL-FLT3, TEL-RET.
