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

•The optimal CD34+ cell dose infused to attain GRFS in children with an HLA- matched sibling donors is 3 to 5 × 106/kg.•We found no significant relationship between the number of CD34+ cells infused and various clinically relevant outcomes. To ensure optimal clinical outcomes for patients while reta...

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Published in:Biology of blood and marrow transplantation 2018-02, Vol.24 (2), p.324-329
Main Authors: Furey, Aimee, Rastogi, Sonal, Prince, Remi, Jin, Zhezhen, Smilow, Elana, Briamonte, Courtney, Kahn, Justine M., Tanhehco, Yvette, Patel, Nita, George, Diane, Garvin, James, Bhatia, Monica, Satwani, Prakash
Format: Article
Language:English
Subjects:
Adolescent
Antigens, CD34 - analysis
Bone Marrow Transplantation - methods
Child
Child, Preschool
Children
Granulocyte Colony-Stimulating Factor - pharmacology
GRFS
Health care utilization
Humans
Practice Guidelines as Topic - standards
Siblings
Tissue Donors
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cited_by cdi_FETCH-LOGICAL-c400t-e33b2847d071de281fdf39424ca9b3cc6570d25467fef581badfc0e256e4d6d13
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creator Furey, Aimee
Rastogi, Sonal
Prince, Remi
Jin, Zhezhen
Smilow, Elana
Briamonte, Courtney
Kahn, Justine M.
Tanhehco, Yvette
Patel, Nita
George, Diane
Garvin, James
Bhatia, Monica
Satwani, Prakash
description •The optimal CD34+ cell dose infused to attain GRFS in children with an HLA- matched sibling donors is 3 to 5 × 106/kg.•We found no significant relationship between the number of CD34+ cells infused and various clinically relevant outcomes. 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 12 years (P 
doi_str_mv 10.1016/j.bbmt.2017.10.031
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The median CD34+ cell count obtained from donors was 700 cells/µL (range, 400-1700 cells/µL) in donors age &lt;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 &gt;12 years (P &lt; .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 × 106/kg was a threshold beyond which increasing CD34+ cell dose did not impact outcome. 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subjects Adolescent
Antigens, CD34 - analysis
Bone Marrow Transplantation - methods
Child
Child, Preschool
Children
Granulocyte Colony-Stimulating Factor - pharmacology
GRFS
Health care utilization
Humans
Practice Guidelines as Topic - standards
Siblings
Tissue Donors
title Bone Marrow Harvest in Pediatric Sibling Donors: Role of Granulocyte Colony-Stimulating Factor Priming and CD34+ Cell Dose
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