ERBB2 and triple-negative breast carcinoma: Despite comprising a minority of breast cancer diagnoses, triple-negative breast cancer (TNBC) is considered one of the worse types, as these tumors lack expression of estrogen (ER), progesterone (PR) and human epidermal growth factor receptor 2 (HER2), limited therapeutic options are available, and patients are often treated with to chemo- and radiotherapy1.