A low CD34+ cell dose results in higher mortality and poorer survival after blood or marrow stem cell transplantation from ... View Full Text


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Article Info

DATE

2000-08-31

AUTHORS

S Singhal, R Powles, J Treleaven, S Kulkarni, B Sirohi, C Horton, B Millar, V Shepherd, D Tait, R Saso, A Rowland, S Long, J Mehta

ABSTRACT

We studied the effect of the CD34+ cell dose on transplant-related mortality (TRM) and survival in 39 patients randomized to receive lenograstim-mobilized PBSCT (n= 20) or BMT (n = 19) from HLA-identical siblings. Both marrow and blood were harvested, and one infused in a double-blind fashion. The median nucleated (7.0 vs 3.2 × 108/kg; P < 0.0001), cd34+ (3.7 vs 1.5 × 106/kg; P = 0.002), CFU-GM (42 vs 19 × 104/kg; P= 0.002), and CD3+ (1.9 vs 0.3 × 108/kg; P < 0.0001) cell doses with pbsct were higher. thirteen patients (6 bmt and 7 pbsct) experienced trm at 15–733 days (median 57); 10 of 20 receiving <2 × 106 CD34+ cells/kg compared with three of 19 receiving ⩾2. Eight of 20 patients receiving <2 × 106 CD34+ cells/kg are alive compared with 14 of 19 receiving ⩾2. In Cox analysis, CD34+ cell dose ⩾2 × 106/kg was associated with lower TRM (RR 0.2, P = 0.01), and higher overall (RR 3.7, P = 0.01) and event-free (RR 3.2, P = 0.02) survival. Other cell populations and the source of stem cells did not affect TRM or survival. We conclude that 2 × 106 CD34+ cells/kg may be the ideal minimum cell dose for allogeneic transplantation although lower doses do not preclude successful therapy. Since the likelihood of obtaining this threshold CD34+ cell number is significantly greater from blood than marrow, PBSCT may be preferable to marrow for allografts from HLA-identical siblings. Bone Marrow Transplantation (2000) 26, 489–496. More... »

PAGES

489-496

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/sj.bmt.1702542

DOI

http://dx.doi.org/10.1038/sj.bmt.1702542

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1013523138

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/11019837


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34 schema:description We studied the effect of the CD34+ cell dose on transplant-related mortality (TRM) and survival in 39 patients randomized to receive lenograstim-mobilized PBSCT (n= 20) or BMT (n = 19) from HLA-identical siblings. Both marrow and blood were harvested, and one infused in a double-blind fashion. The median nucleated (7.0 vs 3.2 × 108/kg; P < 0.0001), cd34+ (3.7 vs 1.5 × 106/kg; P = 0.002), CFU-GM (42 vs 19 × 104/kg; P= 0.002), and CD3+ (1.9 vs 0.3 × 108/kg; P < 0.0001) cell doses with pbsct were higher. thirteen patients (6 bmt and 7 pbsct) experienced trm at 15–733 days (median 57); 10 of 20 receiving <2 × 106 CD34+ cells/kg compared with three of 19 receiving ⩾2. Eight of 20 patients receiving <2 × 106 CD34+ cells/kg are alive compared with 14 of 19 receiving ⩾2. In Cox analysis, CD34+ cell dose ⩾2 × 106/kg was associated with lower TRM (RR 0.2, P = 0.01), and higher overall (RR 3.7, P = 0.01) and event-free (RR 3.2, P = 0.02) survival. Other cell populations and the source of stem cells did not affect TRM or survival. We conclude that 2 × 106 CD34+ cells/kg may be the ideal minimum cell dose for allogeneic transplantation although lower doses do not preclude successful therapy. Since the likelihood of obtaining this threshold CD34+ cell number is significantly greater from blood than marrow, PBSCT may be preferable to marrow for allografts from HLA-identical siblings. Bone Marrow Transplantation (2000) 26, 489–496.
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41 CD3
42 CD34
43 CFU-GM
44 Cox analysis
45 HLA-identical siblings
46 Overall
47 PBSCT
48 TRM
49 allogeneic transplantation
50 allografts
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52 blood
53 cell dose
54 cell doses
55 cell number
56 cell populations
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58 cells
59 cells/
60 days
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