The expression of miR-125b was compared with the pathological characteristics of the breast cancer patients, including age, tumor size, grade of differentiation, presence of lymph node metastases, number of affected nodules, presence of distant metastases, and the molecular classification of the tumors as described (luminal A, luminal B, HER2+, and triple negative) [28]. This evidence concerns the gene ERBB2 and metastatic malignant neoplasm in the lymph nodes.