Laboratory data revealed a high level of hemoglobin A1c (8.1%), but tumor markers, including carcinoembryonic antigen (2.1 ng/mL), cancer antigen-19-9 (15.4 U/mL), Dupan-2 (29 U/mL), and Span-1 (11.4 U/mL), were all within normal limits. The gene discussed is CEACAM5; the disease is neoplasm.