Long-term follow-up of T cell-depleted allogeneic bone marrow transplantation in refractory multiple myeloma: Importance of allogeneic T cells

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Multiple myeloma may be cured by myeloablative conditioning and allogeneic blood or marrow transplantation (alloBMT), but this occurs at the expense of high transplant-related mortality. In an endeavor to reduce procedure-related toxicity, this study retrospectively evaluated the safety, tolerability, and efficacy of T cell depletion by counterflow centrifugal elutriation before alloBMT. Fifty-one patients with stage II (6) or III (45) multiple myeloma received alloBMTs using T cell depletion by elutriation. Fifty-three percent (27 of 51) of patients had primary refractory disease at the time of transplantation, 10% (5 of 51) had relapsed disease, and 4% (2 of 51) had refractory relapsed disease. The median age was 49 (range, 32 to 62) years, and the median time from diagnosis to transplantation was 9 (range, 4 to 58) months. Patients had received a median of 1 (range, 1 to 3) regimen and 4 (range, 2 to 16) cycles of chemotherapy. In this population, transplant-related mortality rate was 24% (12 of 51) with 2 patients dying of graft-versus-host disease (GVHD). Thirty-one of 39 evaluable patients have experienced relapse, and the probability of progression-free survival 5 years after alloBMT alone is 16%. Sixteen patients were given donor lymphocyte infusions (DLI) at the time of relapse (n = 11) or for persistent disease 1 year after transplantation (n = 5). Acute or chronic GVHD was seen in 63% (10 of 16) of patients given DLI. Responses were seen in 8 of 16 patients (6 complete response [CR], 2 partial response [PR]) with 6 of 8 responding patients having GVHD. Five recipients of DLI remain in a continuous CR, ranging from 3 to 64 months in duration. Thus, like chronic myelogenous leukemia, allogeneic T cells appear to have potent antimyeloma activity that is critical for achieving a cure. DLI-induced remissions of multiple myeloma can be durable, even in patients with refractory multiple myeloma. Unlike chronic myelogenous leukemia, the antimyeloma effect of allogeneic T cells rarely occurs in the absence of clinically significant GVHD. © 2003 American Society for Blood and Marrow Transplantation.




Huff, C. A., Fuchs, E. J., Noga, S. J., O’Donnell, P. V., Ambinder, R. F., Diehl, L., … Jones, R. J. (2003). Long-term follow-up of T cell-depleted allogeneic bone marrow transplantation in refractory multiple myeloma: Importance of allogeneic T cells. Biology of Blood and Marrow Transplantation, 9(5), 312–319. https://doi.org/10.1016/S1083-8791(03)00075-2

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