- Patients must have normal organ and marrow function as defined as: leukocytes >3,000/mcL; absolute neutrophil count >1,500/mcL; Platelets >100,000/mcL; total bilirubin within normal institutional limits; AST(SGOT)/ALT (SGPT) <2.5 X institutional upper limit of normal; Creatinine within normal institutional limits and Creatinine clearance (estimated by Cockcroft-Gault equation)>50-mL/min/1.73 m2 for patients with creatinine levels above institutional normal