ERBB2 and breast carcinoma: It was suggested that TNM staging, SLN metastasis, and expression levels of HER-2 and PR were independent factors affecting the DFS of patients with breast cancer (all P<0.05), and that TNM staging, blood vessel invasion, histological grade, SLN metastasis, and ER expression level were independent factors influencing the OS of patients with breast cancer (Table 4).