ERBB2 and triple-negative breast carcinoma: The cells used were the ER-positive (MCF-7), HER2-positive (UACC 732) and triple-negative breast cancer cells (TNBC) (MDA-MB 231) and their resistant phenotypes (TamR MCF-7, TamR UACC 732 and PacR MDA-MB 231 cells).