Some breast cancer subtypes, appeared to have no mutation in certain genes: normal-like in BRCA2 and forkhead box p1 (FOXP1) and basal like in checkpoint kinase 2 (CHEK2) and FOXP1. Supplementary Table 11 lists all 455 genes, along with their percentage mutation rates, average mutation rates per subtype and per gene. This evidence concerns the gene CHEK2 and breast cancer.