Tumor marker levels were as follows: carcinoembryonic antigen (CEA), 3.6 ng/mL (<5.0 ng/mL); cancer antigen 15-3 (CA15-3), 12.3 U/mL (<31.3 U/mL); and soluble interleukin-2 receptor (sIL-2R), 228 U/mL (121-613 U/mL). The gene discussed is CEACAM5; the disease is neoplasm.