While GD2S and GD3S expression levels do not affect BC patients’ overall survival, regardless of their ER/PR/Her2 status (expression of the estrogen receptor/progesterone receptor/epidermal growth factor receptor 2), CASD1 high expression is associated with a better survival of BC patients having ER–/PR–/Her2– status (Figure 9). The gene discussed is ERBB2; the disease is breast cancer.