Compared to 8.0% (7/88) in BRCA mutation carriers and 7.1% (23/326) in non-carriers, although 33.3% (2/6) of TP53 mutation carriers developed breast cancer before age 30 years, more (66.7%, 4/6) TP53 carriers developed breast cancer after the age of 30 years. This evidence concerns the gene TP53 and breast cancer.