When classified according to tumor subtype, KRAS mutations were identified in 24.9% of patients with intrahepatic cholangiocarcinoma (IHC), in 32.2% of those with extrahepatic cholangiocarcinoma (EHC), and in 9.4% of those with gall-bladder cancer (GB). The gene discussed is KRAS; the disease is intrahepatic cholangiocarcinoma.