alexa Double-chimaerism after transplantation of two human leucocyte antigen mismatched, unrelated cord blood units.
Molecular Biology

Molecular Biology

Journal of Cell Science & Therapy

Author(s): De Lima M, St John LS, Wieder ED, Lee MS, McMannis J,

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Abstract The small number of progenitor cells is the major limitation to the use of umbilical cord blood (UCB) for the transplantation of adults. We tested the hypothesis that two units transplanted simultaneously could each contribute to haematopoietic reconstitution. A patient with advanced acute lymphocytic leukaemia received a mismatched, unrelated UCB transplant using units from two donors after conditioning. The recipient achieved a complete remission without graft-versus-host disease. Double chimaerism was documented in several leucocyte subpopulations; both units contributed to haematopoiesis until relapse. Triple chimaerism was present from relapse until death due to leukaemia. This approach may potentially improve UCB transplantation outcome for adults lacking a histocompatible donor.
This article was published in Br J Haematol and referenced in Journal of Cell Science & Therapy

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