Abstract
Forty healthy adult donors underwent marrow (BM) as well as peripheral blood (PBSC) stem cell collections for their HLA-identical adult siblings with hematologic malignancies. BM was harvested on day 1 (target 3 × 108 nucleated cells/kg, 10 μg/kg lenograstim (glycosylated G-CSF) administered on days 2–6, and a single leukapheresis performed on day 6. The blood volume processed was the higher of 200% donor blood volume or 10 liters. The total nucleated cell (TNC) yields from PBSC were 1.1- to 4.3-fold higher than BM (median 7.0 vs 3.1 × 108/kg, P 7lt; 0.0001). Although bm contained a higher proportion of cd34+cells (1.3% vs 0.7%, P < 0.0001) and a comparable proportion of cd3+ cells (median 29% vs 26%, P = 0.4), the absolute numbers of CD34+ and CD3+ cells and their subsets were several times higher in PBSC. There was a poor correlation between BM and PBSC CD34 and TNC numbers, but a significant correlation between BM and PBSC CD3 numbers. Only five of 40 BM harvests contained ⩾2 × 106 CD34+ cells/kg compared with 35 of 40 PBSC harvests (P < 0.0001). we conclude that the numbers of progenitor and immunocompetent cells in pbsc are several times higher than in bm. it is possible to collect adequate numbers of progenitor cells from blood after lenograstim stimulation more frequently than from marrow, and donors yielding low quantities of progenitor cells from bm usually deliver better quantities from pbsc. Bone Marrow Transplantation (2000) 25, 501–505.
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Acknowledgements
The study was supported by Chugai Pharma UK, the Bud Flanagan Leukaemia Fund, and the Cancer Research Campaign, and was presented at the 39th Annual Meeting of the American Society of Hematology, San Diego, USA in December 1997.
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Singhal, S., Powles, R., Kulkarni, S. et al. Comparison of marrow and blood cell yields from the same donors in a double-blind, randomized study of allogeneic marrow vs blood stem cell transplantation. Bone Marrow Transplant 25, 501–505 (2000). https://doi.org/10.1038/sj.bmt.1702173
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DOI: https://doi.org/10.1038/sj.bmt.1702173