In our small cohort, our patients with DH and SH mutations showed that the DH mutation carriers also had stronger family histories of ovarian cancer than SH mutation carriers (p = 0.031); however, the relationship between having ovarian cancer and DH may not be that simple, as all three of our DH carriers with both breast and ovarian cancers carried the BRCA1 mutation instead of the BRCA2 mutation. This evidence concerns the gene BRCA2 and ovarian carcinoma.