The univariate analysis showed that the length of survival of breast cancer patients correlated with the following factors: pathological T-stage (Figure 1), pathological N-stage (Figure 2), axillary lymphadenectomy, lymph node surgery (Figure 3), estrogen receptors (Figure 4), degree of tumor differentiation, molecular subtype, and surgical treatment according to the established guidelines (Table 1). The gene discussed is ESR1; the disease is breast cancer.