EPSTEIN-BARR VIRUS RELATED LYMPHOPROLIFERATIONS AFTER STEM CELL TRANSPLANTATION

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Simona Sica
Elisabetta Metafuni
Silvia Bellesi
Patrizia Chiusolo

Keywords

EBV, Hematopopietic Stem Cell Transplantation, Lymphoma

Abstract

Epstein-Barr virus related lymphoproliferative  disorders are a rare but potentially fatal complication of allogeneic stem cell transplantation with an incidence of 1-3% and  occurring within 6 months after transplantation.  The most relevant risk factors include the use of in vivo T-cell depletion with antithymocyte globulin, HLA disparities between donor and recipient, donor type,  splenectomy etc. The higher the numbers of risk factors the higher the risk of developing Epstein-Barr virus related lymphoproliferative  disorders. Monitoring EBV viremia after transplantation is of value and it should be applied to high risk patients since it allows pre-emptive therapy initiation  at specified threshold values   and early treatment. This strategy  might reduce mortality which was >80% prior to the implementation of anti-EBV therapy . Treatment of EBV-LPD after allogeneic SCT may consist of anti-B-cell therapy (rituximab), adoptive T-cell immunotherapy or both. Rituximab treatment should be considered the first treatment option, preferably guided by intensive monitoring of EBV DNA while reduction of immunosuppression should be carefully evaluated for the risk of graft versus host disease.

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