ERBB2 and neoplasm: In univariate analysis (Table 2), patient’s age above 50 years was associated with longer DFS (p = 2.91 × 10−4, Wald test), whereas pathological grade 2–3 (p = 5.24 × 10−14), positive axillary lymph node status (p = 3.16 × 10−19), pT2-T3 tumor size (p = 1.12 × 10−17), and HER2+ and TN subtypes (p = 4.86 × 10−35) were associated with shorter DFS.