The influence of human platelet antigen match on the success of allogeneic peripheral blood progenitor cell transplantation following a reduced-intensity conditioning regimen.
Transfusion
; 45(2): 195-201, 2005 Feb.
Article
en En
| MEDLINE
| ID: mdl-15660827
ABSTRACT
BACKGROUND:
Allogeneic transplantation in elderly patients requires a dose-reduced conditioning regimen. Owing to reduced-intensity conditioning, host- and donor-type immune responses may affect the early posttransplant period, whereas only later on donor-derived reactions may ensue. Mismatches in the HLA system are known to be detrimental for the outcome of transplantation. Mismatches between donor and recipient for human platelet antigens (HPAs) may also affect the success of transplantation owing to serving as minor histocompatibility antigens and therefore rendering recipients at risk for graft-versus-host disease (GVHD) or graft rejection and inhibition of thrombopoiesis attributed to platelet (PLT) antibodies. PATIENTS ANDMETHODS:
Therefore, the occurrence of GVHD, incidence of relapse, need of PLT support, and outcome by analysis of 45 donor-recipient pairs for HPA-1, -2, -3, and -5 allotypes and screening for PLT antibodies were evaluated before transplantation and again 1 year thereafter.RESULTS:
Mismatches within the HPA system were not associated with an increased occurrence of transplant-related mortality or GVHD, the onset of thrombopoiesis, the frequency of PLT transfusions, or the incidence of relapse. Neither were settings of homozygous donors versus heterozygous recipients (graft-vs.-host direction) nor homozygous recipients versus heterozygous donors (host-vs.-graft direction) associated with any adverse effects on the outcome of the transplantation.CONCLUSION:
Thus, the HPA match does not affect the outcome of transplantation after reduced-intensity conditioning.
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Bases de datos:
MEDLINE
Asunto principal:
Antígenos de Plaqueta Humana
/
Acondicionamiento Pretrasplante
/
Trasplante de Células Madre de Sangre Periférica
Tipo de estudio:
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Adolescent
/
Adult
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Aged
/
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Transfusion
Año:
2005
Tipo del documento:
Article
País de afiliación:
Austria