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Ref Type Journal Article
PMID (27231123)
Authors Saha SK, Gordan JD, Kleinstiver BP, Vu P, Najem MS, Yeo JC, Shi L, Kato Y, Levin RS, Webber JT, Damon LJ, Egan RK, Greninger P, McDermott U, Garnett MJ, Jenkins RL, Rieger-Christ KM, Sullivan TB, Hezel AF, Liss AS, Mizukami Y, Goyal L, Ferrone CR, Zhu AX, Joung JK, Shokat KM, Benes CH, Bardeesy N
Title Isocitrate Dehydrogenase Mutations Confer Dasatinib Hypersensitivity and SRC Dependence in Intrahepatic Cholangiocarcinoma.
Journal Vol Issue Date Pages Journal Short Title
Cancer discovery 6 7 2016 Jul 727-39 Cancer Discov
URL
Abstract Text Intrahepatic cholangiocarcinoma (ICC) is an aggressive liver bile duct malignancy exhibiting frequent isocitrate dehydrogenase (IDH1/IDH2) mutations. Through a high-throughput drug screen of a large panel of cancer cell lines, including 17 biliary tract cancers, we found that IDH mutant (IDHm) ICC cells demonstrate a striking response to the multikinase inhibitor dasatinib, with the highest sensitivity among 682 solid tumor cell lines. Using unbiased proteomics to capture the activated kinome and CRISPR/Cas9-based genome editing to introduce dasatinib-resistant "gatekeeper" mutant kinases, we identified SRC as a critical dasatinib target in IDHm ICC. Importantly, dasatinib-treated IDHm xenografts exhibited pronounced apoptosis and tumor regression. Our results show that IDHm ICC cells have a unique dependency on SRC and suggest that dasatinib may have therapeutic benefit against IDHm ICC. Moreover, these proteomic and genome-editing strategies provide a systematic and broadly applicable approach to define targets of kinase inhibitors underlying drug responsiveness.IDH mutations define a distinct subtype of ICC, a malignancy that is largely refractory to current therapies. Our work demonstrates that IDHm ICC cells are hypersensitive to dasatinib and critically dependent on SRC activity for survival and proliferation, pointing to new therapeutic strategies against these cancers. Cancer Discov; 6(7); 727-39. ©2016 AACR.This article is highlighted in the In This Issue feature, p. 681.

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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
IDH1 R132S intrahepatic cholangiocarcinoma sensitive Saracatinib Preclinical Actionable In a preclinical study, intrahepatic cholangiocarcinoma cells harboring IDH1 R132S demonstrated increased sensitivity to Saracatinib (AZD0530) induced growth inhibition compared to IDH1 wild-type cells in culture (PMID: 27231123). 27231123
IDH1 mutant chondrosarcoma resistant Dasatinib Preclinical Actionable In a preclinical study, chondrosarcoma cells harboring IDH1 mutations were resistant to Sprycel (dasatinib) in culture (PMID: 27231123). 27231123
IDH1 R132S intrahepatic cholangiocarcinoma sensitive Dasatinib Preclinical Actionable In a preclinical study, intrahepatic cholangiocarcinoma cells harboring IDH1 R132S demonstrated increased sensitivity to Sprycel (dasatinib) induced growth inhibition compared to IDH1 wild-type cells in culture (PMID: 27231123). 27231123
IDH1 R132C intrahepatic cholangiocarcinoma sensitive Saracatinib Preclinical Actionable In a preclinical study, intrahepatic cholangiocarcinoma cells harboring IDH1 R132C demonstrated increased sensitivity to Saracatinib (AZD0530) induced growth inhibition compared to IDH1 wild-type cells in culture (PMID: 27231123). 27231123
IDH1 mutant lung adenocarcinoma resistant Dasatinib Preclinical Actionable In a preclinical study, lung adenocarcinoma cells harboring IDH1 mutations were resistant to Sprycel (dasatinib) in culture (PMID: 27231123). 27231123
IDH1 R132C intrahepatic cholangiocarcinoma sensitive Dasatinib Preclinical Actionable In a preclinical study, Sprycel (dasatinib) inhibited growth of intrahepatic cholangiocarcinoma cells harboring IDH1 R132C in culture, and suppressed tumor growth in PDX models (PMID: 27231123). 27231123