A laboratory examination did not reveal elevated levels of serum tumor markers and hormones: carcinoembryonic antigen (CEA), 1.6 ng/ml; carbohydrate antigen-125 (CA-125), 18.45 U/ml; carbohydrate antigen-15-3 (CA-15-3), 20 U/ml; carbohydrate antigen-19-9 (CA-19-9), 0.6 U/ml; alpha-fetoprotein (AFP), 2.3 μg/l; follicle-stimulating hormone (FSH), 23.1 U/l; luteinizing hormone (LH), 38.9 U/l; progesterone (P), 2 nmol/l; 17β-estradiol (E2), 64 pmol/l; testosterone (T), 0.92 nmol/l; and androstenediol (A), 7.74 nmol/l. The gene discussed is CEACAM5; the disease is neoplasm.