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Abstract
Allogeneic bone marrow transplantation (BMT) was performed in 17 patients with chronic lymphocytic leukemia (CLL): 15 resistant and 2 untreated forms; 12 males and 5 females with a mean age of 40 years (32–49). The conditioning regimen and graft versus host disease (GVHD) prophylaxis were varied. Successful engraftment was obtained in 15 evaluable cases. Lymphocytosis and clinical symptoms subsided in all but one case. All 15 evaluable patients developed acute GVHD. Among the 17 patients grafted, one early death was observed at the 15th day post-BMT, and one refractory form died 2 months after BMT. Of the remaining 15 patients in complete remission (CR0, 4 died from GVHD, hemorrhage, and graft failure, and 2 relapsed at 7 and 54 months after BMT and died. 9 patients are alive in CR with a mean follow-up of 25.6 months (4–48). Chimerism was complete in 8 patients and partial in the 2 T-depleted cases. In one case, an immunoglobulin gene rearrangement study was performed showing no residual disease. These results suggest that allogeneic BMT might be proposed as an alternative and possibly curative therapy for refractory CLL in young patients when performed earlier in the disease course.