- ALT and/or AST not more than 1.5 times the upper limit of the normal range (ULN) and alkaline phosphatase not more than 2.5 times the ULN. For subjects with liver metastases, AST or ALT not more than 5 times the ULN may be enrolled if the total bilirubin is less than 1.5 times the ULN and if the ALT and AST is checked twice with an interval of at least 2 weeks prior to treatment to determine that liver function is stable.