Based on data available for families eligible for BRCA1/BRCA2 testing in the Swedish cancer registry, Bermejo and Hemminiki [12] found that GC before the age of 70 was twice as frequent (RR 2.04; 95 % CI 1.14–3.12) in families with breast and ovarian cancer than in the general population. This evidence concerns the gene BRCA2 and cancer.