ESR1 and metastatic malignant neoplasm in the lymph nodes: In addition to SCUBE3 expression, significant factors associated with the risk of death were patient age (p = 0.0025), histologic grade (p = 0.0422), lymph node metastasis (p = 0.0123), TMN stage III (p = 0.0055), ER expression status (p = 0.0023), and TNBC subtype (p = 0.0189).