CEACAM5 and neoplasm: Other common predictor variables included histopathological risk factors such as positive lymph nodes (N = 5, 42%), tumor grade or differentiation (N = 4, 33%), and tumor size (N = 4, 33%); biomarker-CEA (N = 4, 33%); cancer location (N = 4, 33%); and clinical treatment such as surgery, chemotherapy, radiotherapy, and transfusion (N = 5, 42%).