- - Hepatic function: aspartate aminotransferase (AST)/ Alanine Amino Transferase (ALT) = 1.5 X Upper Limit of Normal (ULN) and bilirubin = ULN for patients without liver metastases. AST/ALT = 2.5 X ULN and bilirubin = ULN for patients with liver metastases. Patients with Gilbert syndrome and bilirubin < 2 X ULN and normal AST/ALT are eligible