Bone Marrow Harvest in Pediatric Sibling Donors: Role of Granulocyte Colony-Stimulating Factor Priming and CD34 + Cell Dose.

Autor: Furey A; Department of Nursing, New York-Presbyterian Morgan Stanley Children's Hospital, New York, New York., Rastogi S; Mailman School of Public Health, Columbia University, New York, New York., Prince R; Department of Pediatrics, Columbia University, New York, New York., Jin Z; Mailman School of Public Health, Columbia University, New York, New York., Smilow E; Department of Nursing, New York-Presbyterian Morgan Stanley Children's Hospital, New York, New York., Briamonte C; Department of Nursing, New York-Presbyterian Morgan Stanley Children's Hospital, New York, New York., Kahn JM; Department of Pediatrics, Columbia University, New York, New York., Tanhehco Y; Department of Pathology, Columbia University, New York, New York., Patel N; Department of Pathology, Columbia University, New York, New York., George D; Department of Pediatrics, Columbia University, New York, New York., Garvin J; Department of Pediatrics, Columbia University, New York, New York., Bhatia M; Department of Pediatrics, Columbia University, New York, New York., Satwani P; Department of Pediatrics, Columbia University, New York, New York. Electronic address: ps2087@columbia.edu.
Jazyk: angličtina
Zdroj: Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation [Biol Blood Marrow Transplant] 2018 Feb; Vol. 24 (2), pp. 324-329. Date of Electronic Publication: 2017 Oct 23.
DOI: 10.1016/j.bbmt.2017.10.031
Abstrakt: To ensure optimal clinical outcomes for patients while retaining adequate protection for donors, the National Marrow Donor Program developed guidelines specifying that up to 20 mL/kg of bone marrow can be harvested from donors. These guidelines, originally developed for unrelated adult donors, are followed in children as well. We studied the impact of granulocyte colony-stimulating factor (G-CSF) priming on the cellular composition of harvested bone marrow, sought to develop an algorithm to optimize bone marrow harvest volume from pediatric matched sibling donors, and studied the impact of CD34 + cell dose on clinical outcomes. We analyzed data from 92 bone marrow harvests and clinical outcomes for 69 sibling recipient-donor duos, The mean age of recipients was 9.85 ± 5.90 years, and that of donors was 11.85 ± 6.36 years. G-CSF priming was not associated with higher yield of CD34 + cells/µL. The median CD34 + cell count obtained from donors was 700 cells/µL (range, 400-1700 cells/µL) in donors age <6 years, 360 cells/µL (range, 100-1100 cells/µL) in donors age 6 to 12 years, and 300 cells/µL (range, 80-800 cells/µL) in donors age >12 years (P < .001). The number of CD34 + cells infused had no impact on traditional clinical outcomes; however, it was significantly related to graft-versus-host disease/relapse/rejection-free survival. Our investigation revealed that ultimately, a CD34 + cell count of approximately 3 to 5 × 10 6 /kg was a threshold beyond which increasing CD34 + cell dose did not impact outcome. In this study, we addressed the broad question of whether harvesting up to 20 mL/kg of bone marrow from a child donor is truly necessary for optimal outcomes in every pediatric case.
(Copyright © 2017 The American Society for Blood and Marrow Transplantation. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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