Several studies have confirmed that distinct molecular subtypes respond differently to therapy and are related to different prognoses: luminal A is usually the most common molecular subtype and typically confers the best prognosis, luminal B shows a good response to radiation therapy and has intermediate survival, and HER2-enriched and triple-negative breast cancer have a good response to chemotherapy but the worst overall survival (4, 5). This evidence concerns the gene ERBB2 and triple-negative breast carcinoma.