Breast cancer has been categorized into five main types: luminal A, luminal B, triple negative/basal like, Her2-enriched and normal like, on the basis of hormone receptors (estrogen receptor [ER] and progesterone receptor [PR]), human epidermal growth factor receptor 2 [HER2], and Ki67 [2, 3]. Here, ERBB2 is linked to breast carcinoma.