Expression of CK5 and nestin was used for the categorization of TNBC into basal (TN, CK5+, and/or nestin+) and non-basal (TN, CK5−, and/or nestin−) phenotypes, and Kaplan–Meier curves were used for estimation of overall survival and breast cancer-specific survival (BCSS). This evidence concerns the gene KRT5 and breast cancer.