- Adequate liver function (total bilirubin </= 2.5 mg/dL, serum glutamate pyruvate transaminase (SGPT) </=4 x ULN) and renal function (serum creatinine </= 2.0 mg/dL and/or creatinine clearance < 30 mL/hour). Patients with renal or liver dysfunction due to suspected organ infiltration by lymphocytes may be eligible after discussion with the Principal Investigator, but upper limits for creatinine even under these circumstances must be creatinine < 3mg/dL and bilirubin < 6 mg/dL. Patients with Gilbert's syndrome may be entered on study with bilirubin levels </= 4 mg/dL.