Baseline laboratory tests, including complete blood count, serum levels of electrolytes (including calcium), renal and liver function tests, soluble interleukin-2 receptor (sIL-2R) level, and levels of the tumor markers carcinoembryonic antigen (CEA) and carbohydrate antigen 19-9 (CA19-9), were within normal limits. The gene discussed is CEACAM5; the disease is neoplasm.