Journal
BIOLOGY OF BLOOD AND MARROW TRANSPLANTATION
Volume 7, Issue 1, Pages 31-38Publisher
ELSEVIER SCIENCE INC
DOI: 10.1053/bbmt.2001.v7.pm11215696
Keywords
donor leukocyte infusion; graft-versus-leukemia reaction; relapse
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Between 1991 and 1999, 44 leukemic patients received donor lymphocyte infusions (DLIs) at our center (22 patients with chronic myelogenous leukemia [CML]; 10 with acute myelogenous leukemia; 11 with acute lymphatic leukemia; and I with myelodysplastic syndrome). Seventeen patients received graft-versus-host disease (GVHD) prophylaxis with methotrexate (MTX) at the time of DLI. In CML patients, 15 of 22 (68%) re-entered complete remission after DLI. At 3 years post-DLI, patients with cytogenetic (n = 10) or molecular (n = 3) relapse had a current leukemia-free survival (cLFS) rare of 85% compared with 0% for patients with hematologic relapse (P < .001). Among 15 CML patients who initially responded to DLI, 4 patients relapsed within the first 2 years. Four of 16 patients (25%) with acute leukemia had an initial response with complete remission after DLI. Two of them subsequently relapsed within 1 year. Patients with acute leukemia who relapsed within 1 year of hematopoietic stem cell transplantation (n = 9) had 0% cLFS at 18 months; patients with later relapse had 29% cLFS (P = .015). The overall probability of cLFS at 3 years for CML patients was 46%, For other diseases, cLFS was 13% at 18 months after DLI, Patients who developed chronic GVHD secondary to DLI showed a 3-year cLFS of 51% compared with 18% for patients without chronic GVHD (P = .022). This study emphasizes the importance of early disease stage and presence of chronic GVHD for effective DLI.
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