ERBB2 and neoplasm: In the CEA-high subset, significantly higher frequencies were observed for postmenopausal status (p < 0.0001), larger tumor size (p < 0.0001), lymph node metastasis (p = 0.036), progesterone receptor (PgR) negativity (p = 0.005), and HER2 positivity (p = 0.044).