Moreover, PALB2 PVs were frequently observed in families with history of cancers other than BC/OC, including melanoma, pancreatic, prostate, and stomach cancers, suggesting that PALB2-related families may resemble BRCA2-like families, in which MBC and several other cancers may be found in addition to FBC [87,90,91,93,97,98]. This evidence concerns the gene PALB2 and breast cancer.