- Adequate hepatic and renal function documented within 7 days prior to treatment (estimated glomerular filtration rate>50ml/min, serum bilirubin < 1.5x upper limit of normal; Alanine transaminase or aspartate transaminase < 2.5x upper limit of normal; Alkaline phosphatase< 3x upper limit of normal (in the absence of liver metastases). If liver metastases are present, serum transaminases < 5x upper limit of normal are permitted.)