The predictive model included 7 variables: age (hazard ratio [HR] 1.89, 95% CI 1.50‐2.38), surgery (HR 0.38, 95% CI 0.29‐0.51), marital status (HR 0.75, 95% CI 0.63‐0.89), tumor stage (HR 1.17, 95% CI 1.05‐1.29), clinical stage (HR 1.41, 95% CI 1.15‐1.74), chemotherapy (HR 0.62, 95% CI 0.50‐0.75), and HER2 status (HR 2.68, 95% CI 1.20‐5.98). The gene discussed is ERBB2; the disease is neoplasm.