- Adequate hepatic function as defined by a total bilirubin ≤1.5 milligrams per deciliter (mg/dL), aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤2.5 x upper limit of normal (ULN) (or 5.0 x ULN in the case of liver metastases), and alkaline phosphatase (AP) ≤2.5 x ULN (or 5.0 x ULN in the case of liver metastases)