Double Heterozygotes for Non-Caucasian Families with Mutations in BRCA-1 and BRCA-2 Genes

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The recent discovery of the BRCA-1 and BRCA-2 genes as contributing factors to hereditary breast cancer has significantly improved our understanding of familial breast cancer. Deleterious mutations in both BRCA-1 and BRCA-2 in an individual patient is exceedingly rare, with few case reports in the literature, particularly among non-Caucasian, non-Jewish families. We describe here two cases of deleterious mutations in both genes in a cohort of Korean women with early onset breast cancer.

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