According to available information, 91.5% (54/59) of breast tumors were estrogen receptor (ER) positive and 67.8% (40/59) of tumors were progesterone receptor (PR) positive, whereas HER2 (human epidermal growth factor receptor 2) was overexpressed in 18.6% (11/59) of tumors. The gene discussed is ERBB2; the disease is breast neoplasm.