With a follow-up period from 13 to 66 months, the actuarial OS of luminal A, luminal B, HER2 overexpression, and triple-negative breast cancer was 100, 85.5, 84.6, and 86.5%, respectively, and there were significant differences among the subtypes (P = 0.015) (Table 3). Here, ERBB2 is linked to triple-negative breast carcinoma.