BRCA1 and breast cancer: The most parsimonious model in the analysis of BC risk for BRCA1 mutation carriers included two virtually uncorrelated SNPs (pairwise correlation r2=0.018) rs61494113 (P value=4.4 × 10−16 in conditional regression analysis), and rs3786515 (Peak 2, conditional regression P value=9.6 × 10−5, pairwise correlation r2=0.018; Fig. 1).