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Ref Type Journal Article
PMID (22172724)
Authors Drost R, Bouwman P, Rottenberg S, Boon U, Schut E, Klarenbeek S, Klijn C, van der Heijden I, van der Gulden H, Wientjens E, Pieterse M, Catteau A, Green P, Solomon E, Morris JR, Jonkers J
Title BRCA1 RING function is essential for tumor suppression but dispensable for therapy resistance.
Journal Vol Issue Date Pages Journal Short Title
Cancer cell 20 6 2011 Dec 13 797-809 Cancer Cell
URL
Abstract Text Hereditary breast cancers are frequently caused by germline BRCA1 mutations. The BRCA1(C61G) mutation in the BRCA1 RING domain is a common pathogenic missense variant, which reduces BRCA1/BARD1 heterodimerization and abrogates its ubiquitin ligase activity. To investigate the role of BRCA1 RING function in tumor suppression and therapy response, we introduced the Brca1(C61G) mutation in a conditional mouse model for BRCA1-associated breast cancer. In contrast to BRCA1-deficient mammary carcinomas, tumors carrying the Brca1(C61G) mutation responded poorly to platinum drugs and PARP inhibition and rapidly developed resistance while retaining the Brca1(C61G) mutation. These findings point to hypomorphic activity of the BRCA1-C61G protein that, although unable to prevent tumor development, affects response to therapy.

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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