ERBB2 and breast ductal adenocarcinoma: High TSR was consistently correlated with worse 5‐DFS in age > 50 (HR 0.35; 95% CI 0.16–0.74; p = 0.006), postmenopausal (HR 0.35; 95% CI 0.18–0.67; p = 0.002), ductal carcinoma (HR 0.48; 95% CI 0.29–0.80; p = 0.004), T2 (HR 0.57; 95% CI 0.33–0.98; p = 0.043), histological Grade III (HR 0.53; 95% CI 0.29–0.98; p = 0.043), ER positive (HR 0.41; 95% CI 0.17–0.98; p = 0.045), PR negative (HR 0.55; 95% CI 0.32–0.94; p = 0.028), and HER2 gene non‐amplification subgroups (HR 0.52; 95% CI 0.31–0.89; p = 0.016).