The median values of serum CA19-9 and NGAL levels in the cholangiocarcinoma group were 636.7 U/mL (range: 0.6–71,000 U/mL) and 156.15 ng/mL (range: 56.49–280.77 ng/mL), respectively. The gene discussed is LCN2; the disease is cholangiocarcinoma.