Cited by 1,086BRCA gene mutations in cancerPARP inhibition in cancer therapyDNA Repair Mechanisms

Secondary mutations as a mechanism of cisplatin resistance in BRCA2-mutated cancers

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Sakai, Wataru, Swisher, Elizabeth M., Karlan, Beth Y., Agarwal, Mukesh K., Higgins, Jake, Friedman, Cynthia, Villegas, Emily, Jacquemont, Céline +4 more·2008·Nature

Abstract

Ovarian carcinomas with mutations in the tumour suppressor BRCA2 are particularly sensitive to platinum compounds. However, such carcinomas ultimately develop cisplatin resistance. The mechanism of that resistance is largely unknown. Here we show that acquired resistance to cisplatin can be mediated by secondary intragenic mutations in BRCA2 that restore the wild-type BRCA2 reading frame. First, in a cisplatin-resistant BRCA2-mutated breast-cancer cell line, HCC1428, a secondary genetic change in BRCA2 rescued BRCA2 function. Second, cisplatin selection of a BRCA2-mutated pancreatic cancer cell line, Capan-1 (refs 3, 4), led to five different secondary mutations that restored the wild-type BRCA2 reading frame. All clones with secondary mutations were resistant both to cisplatin and to a poly(ADP-ribose) polymerase (PARP) inhibitor (AG14361). Finally, we evaluated recurrent cancers from patients whose primary BRCA2-mutated ovarian carcinomas were treated with cisplatin. The recurrent tumour that acquired cisplatin resistance had undergone reversion of its BRCA2 mutation. Our results suggest that secondary mutations that restore the wild-type BRCA2 reading frame may be a major clinical mediator of acquired resistance to platinum-based chemotherapy.

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Crossref · 10.1038/nature06633

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  • Mutational scars represent genomic history and not current on-going mutational processes that can result in false positive CHORD predictions.

    “We do acknowledge that mutational scars represent genomic history and not current on-going mutational processes that can result in false positive CHORD predictions, which could be for example due to reversion of HRD by secondary frameshifts34,35, or recent acquisition of the HRD phenotype.”

    From Pan-cancer landscape of homologous recombination deficiency. (2020) · cites this paper as [34]

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Authors
Sakai, W., Swisher, E. M., Karlan, B. Y., Agarwal, M. K., Higgins, J., Friedman, C., Villegas, E., Jacquemont, C., Farrugia, D. J., Couch, F. J., Urban, N., & Taniguchi, T.
Affiliations
  • Fred Hutch Cancer Center (US)
  • University of Washington (US)
  • Cedars-Sinai Medical Center (US)
  • Mayo Clinic (US)
Corresponding author
Taniguchi, Toshiyasu
Venue
Nature
Published
2008-02
Volume
451
Issue
7182
Pages
1116-1120
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2067117419
Cited by
1,086
References
3
Citations by year
2026: 35 · 2025: 43 · 2024: 53 · 2023: 55 · 2022: 73 · 2021: 101 · 2020: 65 · 2019: 55 · 2018: 60 · 2017: 76 · 2016: 59 · 2015: 42 · 2014: 52 · 2013: 50 · 2012: 62
FWCI
38.47
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • authors@Fred Hutch (Fred Hutchinson Cancer Research Center) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • National Institutes of Health (5p50ca083636-15)
  • National Cancer Institute (P50-CA083636, K08CA096610, R01CA125636)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › BRCA gene mutations in cancer
  • Health Sciences › Medicine › Oncology › PARP inhibition in cancer therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
Keywords
cisplatin resistance, BRCA2 mutation, secondary mutations, acquired drug resistance, platinum-based chemotherapy, ovarian cancer, breast cancer, pancreatic cancer, PARP inhibitors, homologous recombination, DNA repair, reading frame restoration, recurrent tumor
MeSH terms
Poly(ADP-ribose) Polymerase Inhibitors, Benzodiazepines, Breast Neoplasms, Cisplatin, Female, Humans, Middle Aged, Mutation, Neoplasms, Ovarian Neoplasms, Pancreatic Neoplasms, Drug Resistance, Neoplasm, Genes, BRCA2, BRCA2 Protein, Cell Line, Tumor, Azulenes

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