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, 10 (12), 879-82

BRCA2 Founder Mutation in Slovenian Breast Cancer Families

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BRCA2 Founder Mutation in Slovenian Breast Cancer Families

Mateja Krajc et al. Eur J Hum Genet.

Abstract

Linkage analysis has identified BRCA1 and BRCA2 germline mutations as the major cause for cancer predisposition in breast and/or ovarian cancer families. In previous screening efforts on Belgian families we had a BRCA1/2 gene mutation detection rate of 25%.(1) Here we report the results of a BRCA mutation screening in seven high-risk breast/ovarian cancer families from Slovenia. We found a single but highly recurrent BRCA2 splice site mutation (IVS16-2A>G) in three breast cancer-only families. This cancer-linked mutation could not be identified in three families with ovarian cancer, suggesting that the mutation predisposes at least predominantly to breast cancer. All mutation carriers shared a common disease associated haplotype indicating a founder effect. This mutation most probably occurred in a single ancestor and seems essentially confined to the Slovene population.

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