Although no germ-line BRCA1 mutation was observed , 6 of the 18 male breast cancer cases ( 33% ) carried truncating mutations in the BRCA2 gene .
although no germ-line brca1 mutation was observed , 6 of the 18 male breast cancer cases ( 33% ) carried truncating mutations in the brca2 gene .
O O B-other_name B-DNA_domain_or_region O O O O O O O O O B-other_name I-other_name O O O O O B-other_name I-other_name O O B-DNA_domain_or_region O O