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Lymphocyte subset recovery and outcome after T-cell replete allogeneic hematopoietic SCT

Bühlmann, L. and Buser, A. S. and Cantoni, N. and Gerull, S. and Tichelli, A. and Gratwohl, A. and Stern, M.. (2011) Lymphocyte subset recovery and outcome after T-cell replete allogeneic hematopoietic SCT. Bone marrow transplantation, Vol. 46, H. 10. pp. 1357-1362.

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Official URL: http://edoc.unibas.ch/dok/A6005909

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Abstract

Rapid recovery of lymphocytes after T-cell depleted hematopoietic SCT (HSCT) protects from relapse of myeloid malignancies. Whether lymphocyte reconstitution has a similar role after non-manipulated transplantation is controversial. We assessed numbers of CD4 and CD8 T-cells, natural killer (NK) cells and B-cells, before and 1, 3, 6, 12 and 24 months after T-cell replete transplantation in 345 patients. Lymphocyte subset counts up to 6 months post transplant had no effect on relapse. Elevated number of NK cells 12 months post transplant protected from relapse. As a novel finding, early recovery of NK cells was associated with significant protection from TRM already at the 3 and 6 months time points (P=0.03, P=0.02). In Cox multivariable models, patients with NK cells above 150/?L were significantly protected from TRM (hazard ratio (HR) 0.45, 95% confidence interval (95% CI) 0.21-0.95, P=0.03), an effect comparable in magnitude with that of carrying <200 CD4 T-cells/?L (HR 0.37, 95% CI 0.19-0.74, P=0.005). CD8 T-cell and B-cell recovery did not affect the rates of relapse or TRM. Early reconstitution of NK cells and CD4 T-cells in patients undergoing T-cell replete HSCT independently protected from TRM. Only a weak protection from disease relapse was noted for patients with high numbers of NK cells, and this occurred only late after transplantation.
Faculties and Departments:03 Faculty of Medicine > Bereich Querschnittsfächer (Klinik) > Ehemalige Einheiten Querschnittsfächer (Klinik) > Diagnostische Hämatologie (Tichelli)
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Querschnittsfächer (Klinik) > Ehemalige Einheiten Querschnittsfächer (Klinik) > Diagnostische Hämatologie (Tichelli)
03 Faculty of Medicine > Departement Biomedizin > Former Units at DBM > Immunotherapy (Stern)
UniBasel Contributors:Tichelli, André and Stern, Martin Andreas
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Nature Publishing Group
ISSN:0268-3369
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:27 Mar 2014 13:13
Deposited On:27 Mar 2014 13:13

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