Triple-negative breast cancer (TNBC), which is defined as a type of breast cancer with negative expression of estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor-2 (HER2), is regarded as an aggressive subtype clinically with the highest recurrence, metastasis, and mortality rate [3]. The gene discussed is ERBB2; the disease is triple-negative breast carcinoma.