Furthermore, numerous studies have reported that BCs in young women tend to display more aggressive features, such as larger tumor size, poor differentiation, positive lymph nodes, high proliferation rates, higher incidence of Human Epidermal Growth Factor Receptor 2 (HER2/neu) overexpression, abnormal p53 expression, DNA aneuploidy, estrogen receptor/progesterone receptor negativity, and more tumors of the basal-like histologic subtype [3–10]. The gene discussed is ERBB2; the disease is neoplasm.