- Adequate liver function: total bilirubin <1 x NUL; aspartate aminotransferase (AST) and alanine aminotransferase (ALT) <2.5 x NUL; alkaline phosphatase (AP) < 5 x NUL. Patients with AST and/or ALT > 1.5 < 2.5 x NUL and AP > 1.5 x NUL < 5 x NUL are not eligible.