Statistical evaluation of signal proportions was performed on five subgroups: (1) luminal-mucinous (MUC); (2) luminal-lobular (L); (3) luminal-no-special type (NST); (4) HER2 positive (HER2 +), and (5) triple-negative breast cancer (TNBC). This evidence concerns the gene ERBB2 and triple-negative breast carcinoma.