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Breast Cancer Research and Treatment

, Volume 131, Issue 1, pp 89–97 | Cite as

Cancer predisposing BARD1 mutations in breast–ovarian cancer families

  • Magdalena RatajskaEmail author
  • Ewelina Antoszewska
  • Anna Piskorz
  • Izabela Brozek
  • Åke Borg
  • Hanna Kusmierek
  • Wojciech Biernat
  • Janusz Limon
Preclinical study

Abstract

The breast cancer susceptibility gene BARD1 (BRCA1-associated RING domain protein, MIM# 601593) acts with BRCA1 in DNA double-strand break (DSB) repair and also in apoptosis initiation. We screened 109 BRCA1/2 negative high-risk breast and/or ovarian cancer patients from North-Eastern Poland for BARD1 germline mutations using a combination of denaturing high-performance liquid chromatography and direct sequencing. We identified 16 different BARD1 sequence variants, five of which are novel. Three of them were suspected to be pathogenic, including a protein truncating nonsense mutation (c.1690C>T, p.Gln564X), a splice mutation (c.1315-2A>G) resulting in exon 5 skipping, and a silent change (c.1977A>G) which alters several exonic splicing enhancer motifs in exon 10 and results in a transcript lacking exons 2–9. Our findings suggest that BARD1 mutations may be regarded as cancer risk alleles and warrant further investigation to determine their actual contribution to non-BRCA1/2 breast and ovarian cancer families.

Keywords

Breast cancer Ovarian cancer Hereditary BARD1 mutation 

Notes

Acknowledgments

The cooperation of all the patients and their families who participated in this study was invaluable. We thank to Rafal Dziadziuszko for help with editing the manuscript, Anna Stanislawska-Sachadyn and Bartosz Wasag for laboratory assistance. This study was supported by a grant from MNiSW: N401 164 31/3656 and N407 627740.

Conflicts of interest

None of the authors have any conflicts of interest to declare. Authors also do not have a financial relationship with any of the organizations that sponsored the research. Authors have full control of all primary data and agree to allow the journal to review the data if requested.

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Copyright information

© Springer Science+Business Media, LLC. 2011

Authors and Affiliations

  • Magdalena Ratajska
    • 1
    Email author
  • Ewelina Antoszewska
    • 1
  • Anna Piskorz
    • 1
  • Izabela Brozek
    • 1
    • 2
  • Åke Borg
    • 3
  • Hanna Kusmierek
    • 4
  • Wojciech Biernat
    • 5
  • Janusz Limon
    • 1
    • 2
  1. 1.Department of Biology and GeneticsMedical University of GdanskGdanskPoland
  2. 2.Regional Oncological Outpatient ClinicGdanskPoland
  3. 3.Department of Oncology, Clinical SciencesLund UniversityLundSweden
  4. 4.Intercollegiate Faculty of Biotechnology UG-MUGGdanskPoland
  5. 5.Department of PathologyMedical University of GdanskGdanskPoland

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