GPT and undifferentiated pancreatic carcinoma: The serological findings in patients with undifferentiated pancreatic carcinoma generally feature elevated conjugated and unconjugated serum bilirubin and total bilirubin (TBIL) and liver enzymes, including aspartate aminotransferase (AST), alkaline phosphatase (ALP) and alanine aminotransferase (ALT) [9,11,35,36].