Cited by 531BRCA gene mutations in cancerCancer Genomics and DiagnosticsDNA Repair Mechanisms

A mutational signature reveals alterations underlying deficient homologous recombination repair in breast cancer

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Polak, Paz, Kim, Jaegil, Braunstein, Lior Z, Karlic, Rosa, Haradhavala, Nicholas J, Tiao, Grace, Rosebrock, Daniel, Livitz, Dimitri +20 more·2017·Nature Genetics

Abstract

Biallelic inactivation of BRCA1 or BRCA2 is associated with a pattern of genome-wide mutations known as signature 3. By analyzing ∼1,000 breast cancer samples, we confirmed this association and established that germline nonsense and frameshift variants in PALB2, but not in ATM or CHEK2, can also give rise to the same signature. We were able to accurately classify missense BRCA1 or BRCA2 variants known to impair homologous recombination (HR) on the basis of this signature. Finally, we show that epigenetic silencing of RAD51C and BRCA1 by promoter methylation is strongly associated with signature 3 and, in our data set, was highly enriched in basal-like breast cancers in young individuals of African descent.

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Authors
Polak, P., Kim, J., Braunstein, L. Z., Karlic, R., Haradhavala, N. J., Tiao, G., Rosebrock, D., Livitz, D., Kübler, K., Mouw, K. W., Kamburov, A., Maruvka, Y. E., Leshchiner, I., Lander, E. S., Golub, T. R., Zick, A., Orthwein, A., Lawrence, M. S., Batra, R. N., Caldas, C., Haber, D. A., Laird, P. W., Shen, H., Ellisen, L. W., D'Andrea, A. D., Chanock, S. J., Foulkes, W. D., & Getz, G.
Affiliations
  • Broad Institute (US)
  • Brigham and Women's Hospital (US)
  • Hadassah Medical Center (IL)
  • McGill University (CA)
  • University of Cambridge (GB)
  • Harvard University (US)
  • Van Andel Institute (US)
  • National Cancer Institute (US)
  • McGill University Health Centre (CA)
Corresponding author
Getz, Gad
Venue
Nature Genetics
Published
2017-08-21
Volume
49
Issue
10
Pages
1476-1486
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W2749641460
Cited by
531
References
71
Citations by year
2026: 33 · 2025: 31 · 2024: 44 · 2023: 66 · 2022: 86 · 2021: 85 · 2020: 77 · 2019: 65 · 2018: 40 · 2017: 4
FWCI
33.68
Type
journal article
Language
en
Open access
Locations
  • Nature Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Cancer Research UK (16942)
  • National Institute for Health and Care Research (NF-SI-0515-10090, NF-SI-0611-10154)
  • National Cancer Institute (U24CA143845)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › BRCA gene mutations in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer Genomics and Diagnostics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
Keywords
mutational signatures, breast cancer, homologous recombination deficiency, DNA repair deficiency, PARP inhibitors, BRCA1, BRCA2, PALB2, ATM, CHEK2, germline mutations, promoter methylation, RAD51C, epigenetic silencing, basal-like breast cancer, African ancestry
MeSH terms
Breast Neoplasms, Female, Humans, Mutation, Neoplasm Proteins, Gene Expression Regulation, Neoplastic, Germ-Line Mutation, DNA Methylation, Genes, BRCA1, Genetic Predisposition to Disease, Gene Silencing, Allelic Imbalance, Genes, BRCA2, Genes, Neoplasm, Gene Regulatory Networks, Transcriptome, Recombinational DNA Repair

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