Among breast cancer subtypes (Figure 2B), the top eight mutational rates were MAD2L2/FANCV (37.5%), FANCI (32%), ATR (32%), FAAP20 (30%), FAAP100 (28%), SLX4 (27%), FANCT (27%), and BRIP1 (26%) in breast invasive carcinoma NOS. This evidence concerns the gene FAAP20 and breast cancer.