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Τετάρτη 23 Μαΐου 2018

Management of Non-Diffuse Large B Cell Lymphoma Post-Transplant Lymphoproliferative Disorder

Opinion statement

Post-transplant lymphoproliferative disorder (PTLD) is one of the most common neoplasms seen after solid organ and hematopoietic stem cell transplantation, and is associated with significant morbidity and mortality. The pathogenesis is related to post-transplant immunosuppression and EBV infection. Prevention of PTLD depends upon judicious use of immunosuppression and serial EBV monitoring. Preemptive therapy consists of reduction of immunosuppression, antiviral medications, and single-agent rituximab. There are no randomized phase III trials on PTLD treatment, so current management guidelines are largely based on recent phase II trials, single-institution retrospective studies, and expert opinion. Management of PTLD is dependent upon its subtypes. Early-type and polymorphic PTLD generally respond to reduction of immunosuppression and rituximab monotherapy, whereas monomorphic PTLD often requires additional concurrent or sequential use of chemotherapy. For rare subtypes of PTLD, standard-of-care guidelines for de novo lymphomas are recommended. Surgical resection or radiotherapy may be used as adjunctive therapy depending on the extent of disease. Non-chemotherapy options such as adoptive T cell therapy have shown promising efficacy and must be explored further. Despite progress in the last decade, overall survival rates continue to be low in published series. This review highlights the need for prospective randomized trials incorporating novel agents to improve outcomes in PTLD.



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