Reference Detail

Ref Type

Journal Article

PMID

(24474669)

Authors

Garcia PD, Langowski JL, Wang Y, Chen M, Castillo J, Fanton C, Ison M, Zavorotinskaya T, Dai Y, Lu J, Niu XH, Basham S, Chan J, Yu J, Doyle M, Feucht P, Warne R, Narberes J, Tsang T, Fritsch C, Kauffmann A, Pfister E, Drueckes P, Trappe J, Wilson C, Han W, Lan J, Nishiguchi G, Lindvall M, Bellamacina C, Aycinena JA, Zang R, Holash J, Burger MT

Title

Pan-PIM kinase inhibition provides a novel therapy for treating hematologic cancers.

Journal	Vol	Issue	Date	Pages	Journal Short Title
Clinical cancer research : an official journal of the American Association for Cancer Research	20	7	2014 Apr 01	1834-45	Clin Cancer Res

URL

Abstract Text

PIM kinases have been shown to act as oncogenes in mice, with each family member being able to drive progression of hematologic cancers. Consistent with this, we found that PIMs are highly expressed in human hematologic cancers and show that each isoform has a distinct expression pattern among disease subtypes. This suggests that inhibitors of all three PIMs would be effective in treating multiple hematologic malignancies.Pan-PIM inhibitors have proven difficult to develop because PIM2 has a low Km for ATP and, thus, requires a very potent inhibitor to effectively block the kinase activity at the ATP levels in cells. We developed a potent and specific pan-PIM inhibitor, LGB321, which is active on PIM2 in the cellular context.LGB321 is active on PIM2-dependent multiple myeloma cell lines, where it inhibits proliferation, mTOR-C1 signaling and phosphorylation of BAD. Broad cancer cell line profiling of LGB321 demonstrates limited activity in cell lines derived from solid tumors. In contrast, significant activity in cell lines derived from diverse hematological lineages was observed, including acute lymphoblastic leukemia (ALL), acute myelogenous leukemia (AML), multiple myeloma and non-Hodgkin lymphoma (NHL). Furthermore, we demonstrate LGB321 activity in the KG-1 AML xenograft model, in which modulation of pharmacodynamics markers is predictive of efficacy. Finally, we demonstrate that LGB321 synergizes with cytarabine in this model.We have developed a potent and selective pan-PIM inhibitor with single-agent antiproliferative activity and show that it synergizes with cytarabine in an AML xenograft model. Our results strongly support the development of Pan-PIM inhibitors to treat hematologic malignancies.

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Molecular Profile	Treatment Approach

Gene Name	Source	Synonyms	Protein Domains	Gene Description	Gene Role

Therapy Name	Drugs	Efficacy Evidence	Clinical Trials
LGH447	LGH447	0	3

Drug Name	Trade Name	Synonyms	Drug Classes	Drug Description
LGH447		LGB321\|PIM447\|LGH-447\|PIM-447	PIM Inhibitor (Pan) 9	LGH447 is a pan-PIM protein kinase inhibitor, which leads to cell cycle arrest and growth inhibition in PIM-expressing tumor cells (PMID: 24474669, PMID: 30370255).

Gene	Variant	Impact	Protein Effect	Variant Description	Associated with drug Resistance

Molecular Profile	Indication/Tumor Type	Response Type	Therapy Name	Approval Status	Evidence Type	Efficacy Evidence	References