Renal dysfunction was evident, with a blood urea nitrogen level of 23 mg/dL (normal: 8-20 mg/dL) and creatinine level of 1.30 mg/dL (normal: 0.46-0.79 mg/dL); however, tumor markers were all below cutoff values (carcinoembryonic antigen (CEA), 3.6 ng/ml; cancer antigen 19-9 (CA19-9), 11.2 U/ml; CA125, 19.2 U/ml; and squamous cell carcinoma (SCC), 0.8 ng/ml). The gene discussed is CEACAM5; the disease is squamous cell carcinoma.