A genome-wide association study (GWAS) investigating BC risk in BRCA, and non-BRCA mutation carriers reported it to be higher in some of the populations under study, such as people of Ashkenazi Jewish descent, in BRCA1 rather than in BRCA2 mutation carriers, in younger women, in the presence of the 5′ to c.2281 and c.4072 to 3′ BRCA1 mutations, and also in patients with a positive family history [13]. Here, BRCA1 is linked to breast cancer.