Journal
BONE MARROW TRANSPLANTATION
Volume 52, Issue 5, Pages 704-710Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/bmt.2016.347
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Funding
- Guangzhou Health and Medical Collaborative Innovation Major Program [201400000003-1, 201400000003-4]
- Army Medical, Science and Technology Research Program (12.5 Program) [BWS11J071]
- State Natural Sciences Fund [81570107]
- Natural Science Foundation of Guangdong Province [2014A030311006]
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Haploidentical hematopoietic stem cell transplantation (haplo-HSCT) for severe aplastic anemia (SAA) is mainly limited by the high incidence of graft failure and GvHD. Mesenchymal stem cells (MSCs) have been shown to support hematopoiesis in vivo and to display potent immunosuppressive effects to prevent or treat GvHD after HSCT. In a multicenter phase II trial, we developed an approach with co-transplantation of MSCs in patients undergoing haplo-HSCT. Forty-four patients with SAA were included. The conditioning regimen included busulfan, cyclophosphamide and thymoglobulin (ATG). The recipients received cyclosporin A (CsA), mycophenolate mofetil and short-term methotrexate for GvHD prophylaxis. Three out of 44 patients, who died early before hematopoietic engraftment, were not assessed. Evaluable patients (97.6%; 40/41) achieved hematopoietic reconstitution and sustained full donor chimerism. The median time for myeloid engraftment was 12 days (range 8-21 days) and for platelet engraftment was 19 days (range 8-154 days). The incidence was 29.3% for grade II-IV acute GvHD and 14.6% for chronic GvHD. The overall survival was 77.3% with a median 12-month (range 0.9-30.8) follow-up for surviving patients. These data suggest that cotransplantation of MSCs could reduce the risk of graft failure and severe GvHD in haplo-HSCT for SAA.
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