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• W3103932292 abstract "Abstract PARP inhibitors have shown remarkable efficacy in the clinical management of several BRCA -mutated tumors. This approach is based on the long-standing hypothesis that PARP inhibition will impair the repair of single stranded breaks, causing synthetic lethality in tumors with loss of high-fidelity double-strand break homologous recombination. While this is now well accepted and has been the basis of several successful clinical trials, emerging evidence strongly suggests that mutation to several additional genes involved in homologous recombination may also have predictive value for PARP inhibitors. While this notion is supported by early clinical evidence, the mutation frequencies of these and other functionally related genes are largely unknown, particularly in cancers not classically associated with homologous recombination deficiency. We therefore evaluated the mutation status of 22 genes associated with the homologous recombination DNA repair pathway or PARP inhibitor sensitivity, first in a pan-cancer cohort of 55,586 patients, followed by a more focused analysis in The Cancer Genome Atlas cohort of 12,153 patients. In both groups we observed high rates of mutations in a variety of HR-associated genes largely unexplored in the setting of PARP inhibition, many of which were associated also with poor clinical outcomes. We then extended our study to determine which mutations have a known oncogenic role, as well as similar to known oncogenic mutations that may have a similar phenotype. Finally, we explored the individual cancer histologies in which these genomic alterations are most frequent. We concluded that the rates of deleterious mutations affecting genes associated with the homologous recombination pathway may be underrepresented in a wide range of human cancers, and several of these genes warrant further and more focused investigation, particularly in the setting of PARP inhibition and HR deficiency." @default.
• W3103932292 created "2020-11-23" @default.
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• W3103932292 date "2020-11-19" @default.
• W3103932292 modified "2023-10-18" @default.
• W3103932292 title "Frequency and prognostic value of mutations associated with the homologous recombination DNA repair pathway in a large pan cancer cohort" @default.
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• W3103932292 doi "https://doi.org/10.1038/s41598-020-76975-6" @default.
• W3103932292 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7677533" @default.
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• W3103932292 hasPublicationYear "2020" @default.
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