LRG1 and biliary tract neoplasm: Indeed, altered LRG1 expression is associated with various cancers and LRG1 has been proposed as a prognosis/diagnosis marker for hepatocellular carcinoma, gastric cancer, pancreatic cancer, leukaemia, ovarian cancer, breast cancer, prostate cancer, biliary tract cancer, bladder cancer, and non-small cell lung cancer [14,15,16,17,18,19,20,21].