Hematological eligibility parameters (within 1 week of starting therapy): Granulocyte count greater than or equal 1,500/mm3; Hemoglobin greater than or equal to 9.0 g/dL (pre-treatment transfusion is allowed, provided the hemoglobin is maintained for more than 30 days and/or active source of bleeding is identified and treated); Platelet count is greater than or equal to 120,000/mm3; If the creatinine is greater than 1.5 mg/dL, obtain a 24 hour urine collection. Creatinine clearance must be greater than 60 mL/min; Hepatic function: normal bilirubin (total); ALT is less than 2.5 times the normal; AST is less than 2.5 times the normal.