absolute neutrophil count greater than or equal to 1000/microliter, platelets greater than or equal to l00,000/microliter, bilirubin (total and direct) less than or equal to 1.5x upper limit of normal, and aspartate aminotransferase (AST) less than or equal to 3x upper limit of normal, unless impairment is due to organ involvement by lymphoma, creatinine less than or equal to 1.5x upper limit of normal, or documented creatinine clearance of greater than or equal to 60mL/min