- Adequate hepatic function: bilirubin < 1.5 x UNL, aspartate aminotransferase (AST)/alanine aminotransferase (ALT) levels < 2.5 x UNL (< 5 x upper limit of normal for patients with liver involvement of their cancer), alkaline phosphatase < 5 x UNL (except in case of bone metastasis without any liver disease)