Uzansertib phosphate (INCB053914 phosphate) is an orally active, ATP-competitive inhibitor of pan-PIM kinase(PIM1, PIM2, PIM3 with IC50s of 0.24 nM, 30 nM, 0.12 nM , respectively).

Pim3:0.12 nM, Pim2:30 nM, Pim1:0.24 nM

INCB053914, a novel, potent, and selective adenosine triphosphate-competitive pan-PIM kinase inhibitor.?In vitro, INCB053914 inhibited proliferation and the phosphorylation of downstream substrates in cell lines from multiple hematologic malignancies.

Effects were confirmed in primary bone marrow blasts from patients with acute myeloid leukemia treated ex vivo and in blood samples from patients receiving INCB053914 in an ongoing phase 1 dose-escalation study.?In vivo, single-agent INCB053914 inhibited Bcl-2-associated death promoter protein phosphorylation and dose-dependently inhibited tumor growth in acute myeloid leukemia and multiple myeloma xenografts.?Additive or synergistic inhibition of tumor growth was observed when INCB053914 was combined with selective PI3Kδ inhibition, selective JAK1 or JAK1/2 inhibition, or cytarabine.