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Ref Type Journal Article
PMID (28363999)
Authors Schmitt A, Knittel G, Welcker D, Yang TP, George J, Nowak M, Leeser U, Büttner R, Perner S, Peifer M, Reinhardt HC
Title ATM Deficiency Is Associated with Sensitivity to PARP1- and ATR Inhibitors in Lung Adenocarcinoma.
URL
Abstract Text Defects in maintaining genome integrity are a hallmark of cancer. The DNA damage response kinase ATM is frequently mutated in human cancer, but the significance of these events to chemotherapeutic efficacy has not been examined deeply in whole organism models. Here we demonstrate that bi-allelic Atm deletion in mouse models of Kras-mutant lung adenocarcinoma does not affect cisplatin responses. In marked contrast, Atm-deficient tumors displayed an enhanced response to the topoisomerase-II poison etoposide. Moreover, Atm-deficient cells and tumors were sensitive to the PARP inhibitor olaparib. This actionable molecular addiction to functional PARP1 signaling was preserved in models that were proficient or deficient in p53, resembling standard or high-risk genetic constellations, respectively. Atm deficiency also markedly enhanced sensitivity to the ATR inhibitor VE-822. Taken together, our results provide a functional rationale to profile human tumors for disabling ATM mutations, particularly given their impact on PARP1 and ATR inhibitors. Cancer Res; 77(11); 3040-56. ©2017 AACR.

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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
Drug Name Trade Name Synonyms Drug Classes Drug Description
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