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Blood, 16 July 2009, Vol. 114, No. 3, pp. 511-517. Prepublished online as a Blood First Edition Paper on May 14, 2009; DOI 10.1182/blood-2009-03-212290.
CLINICAL TRIALS AND OBSERVATIONS Etanercept, mycophenolate, denileukin, or pentostatin plus corticosteroids for acute graft-versus-host disease: a randomized phase 2 trial from the Blood and Marrow Transplant Clinical Trials Network1 Department of Stem Cell Transplantation and Cellular Therapy, University of Texas M. D. Anderson Cancer Center, Houston; 2 Department of Bone Marrow Transplantation, University of Minnesota, Minneapolis; 3 Department of Population Health, Medical College of Wisconsin, Milwaukee; 4 Department of Oncology, The Johns Hopkins University, Baltimore, MD; 5 The EMMES Corporation, Rockville, MD; 6 Transfusion Medicine and Cellular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health/Department of Health and Human Services, Bethesda, MD; 7 Division of Neoplastic Diseases and Related Disorders, Department of Medicine, Center for International Blood and Marrow Transplant Research (CIBMTR) Medical College of Wisconsin, Milwaukee; 8 Division of Hematology/Oncology, University of Pennsylvania, Philadelphia; 9 Department of Medical Oncology/Hematologic Malignancies, Dana-Farber Cancer Institute, Boston, MA; 10 School of Medicine, Oregon Health and Science University, Portland; 11 Department of Medicine, University of Florida Shands Cancer Center, Gainesville; 12 Division of Neoplastic Diseases and Related Disorders, Department of Medicine, and CIBMTR, Froedtert and The Medical College of Wisconsin, Milwaukee; and 13 Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor Acute graft-versus-host disease (aGVHD) is the primary limitation of allogeneic hematopoietic cell transplantation. Corticosteroids remain the standard initial therapy, yet only 25% to 41% of patients completely respond. This randomized, 4-arm, phase 2 trial was designed to identify the most promising agent(s) for initial therapy for aGVHD. Patients were randomized to receive methylprednisolone 2 mg/kg per day plus etanercept, mycophenolate mofetil (MMF), denileukin diftitox (denileukin), or pentostatin. Patients (n = 180) were randomized; their median age was 50 years (range, 7.5-70 years). Myeloablative conditioning represented 66% of transplants. Grafts were peripheral blood (61%), bone marrow (25%), or umbilical cord blood (14%); 53% were from unrelated donors. Patients who received MMF for prophylaxis (24%) were randomized to a non-MMF arm. At randomization, aGVHD was grade I to II (68%), III to IV (32%), and (53%) had visceral organ involvement. Day 28 complete response rates were etanercept 26%, MMF 60%, denileukin 53%, and pentostatin 38%. Corresponding 9-month overall survival was 47%, 64%, 49%, and 47%, respectively. Cumulative incidences of severe infections were as follows: etanercept 48%, MMF 44%, denileukin 62%, and pentostatin 57%. Efficacy and toxicity data suggest the use of MMF plus corticosteroids is the most promising regimen to compare against corticosteroids alone in a definitive phase 3 trial. This study is registered at http://www.clinicaltrials.gov as NCT00224874 [ClinicalTrials.gov] .
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