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Cancer predisposing BARD1 mutations in breast-ovarian cancer families

Author:
  • Magdalena Ratajska
  • Ewelina Antoszewska
  • Anna Piskorz
  • Izabela Brozek
  • Åke Borg
  • Hanna Kusmierek
  • Wojciech Biernat
  • Janusz Limon
Publishing year: 2012
Language: English
Pages: 89-97
Publication/Series: Breast Cancer Research and Treatment
Volume: 131
Issue: 1
Document type: Journal article
Publisher: Springer

Abstract english

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

  • Cancer and Oncology
  • Breast cancer
  • Ovarian cancer
  • Hereditary
  • BARD1 mutation

Other

Published
  • ISSN: 1573-7217
Åke Borg
Åke Borg
E-mail: ake [dot] borg [at] med [dot] lu [dot] se

Principal investigator

Oncology and Pathology, MV

+46 46 275 25 52

MV 404 C21B2

90

Project manager

Familial Breast Cancer

90

Professor

Oncology and Pathology, MV

MV 404 C21C2

90