Bone Marrow Transplantation in Treating Patients With Chronic Lymphocytic Leukemia

DISEASE CHARACTERISTICS: Chronic lymphocytic leukemia (CLL) patients after initial relapse who have achieved a complete or partial remission with fludarabine therapy or after initial relapse or progression Prolymphocytic leukemia in first remission or after relapse Patients 15-65 years old who lack an HLA-identical sibling are eligible for autologous BM transplantation Patients 16-50 years old with an HLA identical or one antigen mismatched related donor are eligible for allogeneic BM transplantation PATIENT CHARACTERISTICS: Age: 15-65 (See Disease Characteristics) Performance status: Zubrod no more than 2 Hematopoietic: Not specified Hepatic: Bilirubin no greater than 1.5 mg/dL Renal: Creatinine no greater than 1.5 mg/dL Cardiovascular: Cardiac ejection fraction at least 50% Pulmonary: DLCO at least 50% of predicted Other: No severe concomitant medical or psychiatric illnesses PRIOR CONCURRENT THERAPY: No extensive prior radiotherapy which would prevent administration of total body radiation Patients may also participate in study MDA-DM-92082 for retroviral gene marking of the autologous marrow and blood cells