12. Patients must have adequate bone marrow function (ANC = or > 1,500/mm^3 and platelet count of = or > 100,000/mm^3), adequate liver function (SGPT = or < 3 times upper limit of normal and alkaline phosphatase = or < 2 times upper limit of normal, bilirubin = or <1.5 mg/dl), adequate renal function (BUN and creatinine = or <1.5 times upper limit of normal) and normal serum amylase and lipase prior to starting therapy. Elevated cholesterol and triglycerides are not a contraindication to study enrollment, but should be managed as clinically appropriate by the treating physician.