Long-term efficacy of EBV-specific T cells for EBV-PTLD after allogeneic stem cell transplantation: a real word study.

Transplant Cell Ther

Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Cell and Gene Therapy for Hematologic Malignancies, Peking University, Beijing, China;. Electronic address:

Published: August 2025


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Article Abstract

Background: Epstein-Barr virus-associated post-transplant lymphoproliferative disorder (EBV-PTLD) remains a life-threatening complication following allogeneic hematopoietic stem cell transplantation (allo-HSCT), especially in rituximab-refractory cases. Adoptive transfer of EBV-specific cytotoxic T lymphocytes (EBV-CTLs) offers a promising strategy to restore antiviral immunity, but long-term efficacy data, particularly in haploidentical transplant recipients, remain limited.

Methods: We conducted a retrospective study of 41 haploidentical HSCT recipients diagnosed with EBV-PTLD and received donor-derived EBV-CTLs. Patients were monitored for virological response, adverse events and transplant outcomes over a median follow-up of 60 months.

Results: EBV-CTLs were administered at a median of 25 days post EBV reactivation and 19 days after PTLD diagnosis, following a median 4 (2-8) doses of rituximab. By day 42 post-infusion, the overall response rate (ORR) was 87.8% (95% CI, 72.0-95.0%), accompanied by a marked reduction in peak EBV DNA levels. The 1-year overall survival (OS) rate was 68.0% (95% CI, 51.3%-80.0%), and survival remained stable without significant decline up to 5 years.

Conclusions: Donor-derived EBV-CTLs are a safe and effective treatment for EBV-PTLD following haploidentical HSCT. Our findings support the long-term efficacy of cellular immunotherapy in managing viral complications post-transplant.

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http://dx.doi.org/10.1016/j.jtct.2025.08.017DOI Listing

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