"Designed" grafts for HLA-haploidentical stem cell transplantation

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Abstract

Today human leukocyte antigen-haploidentical transplantation is a feasible option for patients with high-risk acute leukemia who do not have matched donors. Whether it is T-cell replete or T-cell depleted, it is still, however, associated with issues of transplant-related mortality and posttransplant leukemia relapse. After reports that adoptive immunotherapy with T-regulatory cells controls the alloreactivity of conventional T lymphocytes in animal models, tomorrow's world of haploidentical transplantation will focus on new "designed" grafts. They will contain an appropriate ratio of conventional T lymphocytes and T-regulatory cells, natural killer cells, γ δ T cells, and other accessory cells. Preliminary results of ongoing clinical trials show the approach is feasible. It is associated with better immune reconstitution and a quite powerful graft-versus- leukemia effect with a low incidence of graft-versus-host disease and no need for posttransplant pharmacological prophylaxis. Future strategies will focus on enhancing the clinical benefit of T-regulatory cells by increasing their number and strengthening their function. © 2014 by The American Society of Hematology.

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APA

Martelli, M. F., Di Ianni, M., Ruggeri, L., Pierini, A., Falzetti, F., Carotti, A., … Velardi, A. (2014, February 13). “Designed” grafts for HLA-haploidentical stem cell transplantation. Blood. American Society of Hematology. https://doi.org/10.1182/blood-2013-10-531764

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