The expression level of Plac1 significantly correlated with clinical stage (P = 0.035), hormone receptor (HR) status (P = 0.023), and lymph node metastasis (LNM, P = 0.001), which are known to be important features of breast cancer recurrence after resection, and are generally associated with a poor prognosis. Here, PLAC1 is linked to metastatic malignant neoplasm in the lymph nodes.