APcK110 is a novel Kit inhibitor . APcK110 inhibits proliferation of the mastocytosis cell line HMC1.2 and the SCF-responsive cell line OCI AML3 in a dose-dependent manner . APcK110 is a more potent inhibitor of OCI AML3 proliferation than the clinically used Kit inhibitors imatinib and dasatinib and at least as potent as cytarabine. APcK110 inhibits the phosphorylation of Kit, Stat3, Stat5, and Akt in a dose-dependent fashion, showing activity of APcK110 on Kit and its downstream signaling pathways . APcK110 may have potent application in AML.