As shown in Table 1, T antigen existence was negatively correlated with E-cadherin expression (64.3 vs. 30.3%, p < 0.05) and triple-negative breast cancer (TNBC, 52.8 vs. 18.2%, p < 0.05), but positively correlated with lymph node metastasis (42.9 vs. 64.7%, p < 0.05), estrogen receptor (ER) expression (25.0 vs. 55.0%, p < 0.05), and progestogen receptor (PR) expression (26.1 vs. 55.8%, p < 0.05). Here, ESR1 is linked to metastatic malignant neoplasm in the lymph nodes.