BRCA1 and cancer: The results show that the differences were only present between the cancer-affected subgroups in both groups of BRCA1+ (cancer-affected: P < 0.0001, cancer-unaffected: P = 0.2216) and BRCA2+ (cancer-affected: P = 0.0092, cancer-unaffected: P = 0.2748), but not in BRCAx (cancer-affected: P = 0.4251, cancer-unaffected: P = 0.5664) (Table 4).