His serum elastase-1 level elevated to 3250 (normal range 0–300), while his carcinoembryonic antigen (CEA), cancer antigen 19–9 (CA19-9), duke pancreatic monoclonal antigen type 2 (DUPAN-2), and s-pancreas antigen-1 (Span-1) levels were within their normal ranges. The gene discussed is CEACAM5; the disease is cancer.