Tumour makers, including carcinoembryonic antigen (CEA), cancer antigen (CA) 19-9, CA 125, cytokeratin-19 fragments (CYFRA 21-1), sialyl Lewis X (SLX), squamous cell carcinoma antigen, pro-gastrin-releasing peptide and neuron-specific enolase, were not significantly elevated. The gene discussed is CEACAM5; the disease is neoplasm.