Laboratory tests did not reveal elevated tumor markers, including α-fetoprotein (AFP), β-human chorionic gonadotropin (β-hCG), lactate dehydrogenase (LDH), carbohydrate antigen 199 (CA199), CA125, carcinoembryonic antigen (CEA) or prostate-specific antigen (PSA). The gene discussed is CEACAM5; the disease is neoplasm.