Triple-negative breast cancer (BC), a kind of BC that does not express the genes for estrogen receptor, progesterone receptor, and HER2/neu (Foulkes et al., 2010), is considered to be more aggressive, have a poorer prognosis, and show a higher recurrence ratio than other types of BCs (Zhu et al., 2016). The gene discussed is ERBB2; the disease is breast cancer.