- Patients must have adequate bone marrow function defined as an absolute peripheral granulocyte count of >/= 1,500/mm3 and platelet count of >/= 100,000/mm3; adequate hepatic function defined with a total bilirubin of </= 1.5 mg/dl and aspartate aminotransferase (AST or SGOT)/alanine aminotransferase (ALT or SGPT) </= 2 times the upper limits of normal; adequate renal function defined as serum creatinine clearance >/= 40 cc/min (measured or calculated).