Koreth found that Velcade was beneficial in GVHD; but his was a phase II trial and other phase II trials are ongoing. He found that i the 45 patients who were treated in the study; 89% of patients were treated with a one-locus and 11% of patients were treated with a two-loci mismatch. With a median follow-up of 3 years, the 180-day cumulative incidence of grade 2 to 4 acute GVHD was 22%, and the 1-year cumulative incidence of chronic GVHD was 29%. The non-relapse mortality rate was only 11%, and the relapse rate was 38%. Results were comparable with patients who received HLA-matched transplants with the unexpected observation that bortezomib therapy enhanced immune reconstitution on the basis of measurements of CD8+ T cells and natural killer cells.
The editorial by Giralt that accompanied Koreth report, pointed out that there are four potential current approaches that all are at the same stage of development and that it may be necessary to perform a randomized phase III trial with a short primary end point to be able to rapidly pick a winner from among these competing approaches, one that could be compared with the current standard in a definitive trial.
Koreth J, Stevenson KE, Kim HT, McDonough SM, Bindra B, Armand P, Ho VT, Cutler C, Blazar BR, Antin JH, Soiffer RJ, Ritz J, Alyea EP 3rd. Bortezomib-based graft-versus-host disease prophylaxis in HLA-mismatched unrelated donor transplantation.J Clin Oncol. 2012 Sep 10;30(26):3202-8.
Teresa Caballero-VelázquezPhase II clinical trial for the evaluation of bortezomib within the reduced intensity conditioning regimen (RIC) and post-allogeneic transplantation for high-risk myeloma patients. Phase II clinical trial for the evaluation of bortezomib within the reduced intensity conditioning regimen (RIC) and post-allogeneic transplantation for high-risk myeloma patients, British Journal of Haematology, Volume 162, Issue 4, pages 474–482, August 2013
Koreth J, Stevenson KE, Kim HT, McDonough SM … Antin JH, Soiffer RJ, Ritz J, Alyea EPBortezomib-Based Graft-Versus-Host Disease Prophylaxis in HLA-Mismatched Unrelated Donor Transplantation. J Clin Oncol. 2012 Aug 6
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