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- W4308294057 abstract "Epstein-Barr virus (EBV) reactivation and EBV-related post-transplantation lymphoproliferative disorder (PTLD) are often fatal complications after allogeneic hematopoietic stem cell transplantation (allo-HSCT). The risk of EBV reactivation may be mitigated by depletion of B cells with rituximab. Starting in January 2020, allo-HSCT recipients undergoing T-cell depletion with alemtuzumab received 1 dose of rituximab before transplantation. The objective of this study was to evaluate the cumulative incidence of EBV reactivation and EBV-PTLD in recipients of allo-HSCT and in vivo T-cell depletion with alemtuzumab who received pre-HSCT rituximab compared to patients who did not. This was a single-center retrospective analysis of adult patients who consecutively received an HLA-identical allo-HSCT between January 2019 and May 2021 and in vivo T-cell depletion with alemtuzumab. Patients were included in the rituximab cohort if they received rituximab within 6 months before their transplantation. The primary endpoint was incidence of EBV reactivation at day 180 among those receiving pre-HSCT rituximab versus those not receiving rituximab. Secondary endpoints included cumulative incidence of EBV-PTLD at 1 year, time to engraftment, immune reconstitution, and incidence of infections and acute graft-versus-host disease (aGVHD) at day 180. Eighty-six consecutive patients who received an allo-HSCT with alemtuzumab T-cell depletion were reviewed; 43 patients who received pre-HSCT rituximab after our protocol modification were compared to 43 patients who did not receive pre-HSCT rituximab before this change. Median age was 57 (interquartile range [IQR] 40-69) years, and the majority of patients had acute myeloid leukemia or myelodysplastic syndrome. Baseline characteristics were similar between the cohorts. EBV reactivation at day 180 occurred in 23 (53%) patients without prior rituximab exposure versus 0 patients with pre-HSCT rituximab exposure (P < .0001). Similarly, 6 patients without prior rituximab exposure developed PTLD at 1 year compared to no cases of PTLD among patients receiving pre-HSCT rituximab. There was no difference in neutrophil engraftment, incidence of infections, or aGVHD at day 180 between the 2 cohorts. There was a delay in time to platelet engraftment in the rituximab cohort (median 16 [IQR 15-20] days versus 15 [IQR 14-17] days; P = .04). Administration of pre-HSCT rituximab before allo-HSCT in patients receiving T-cell depletion with alemtuzumab was associated with a significant decrease in the risk for EBV reactivation and EBV-PTLD, without increasing aGVHD or infection rates." @default.
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- W4308294057 date "2023-02-01" @default.
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- W4308294057 title "Pre-Hematopoietic Stem Cell Transplantation Rituximab for Epstein-Barr Virus and Post-Lymphoproliferative Disorder Prophylaxis in Alemtuzumab Recipients" @default.
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- W4308294057 doi "https://doi.org/10.1016/j.jtct.2022.10.023" @default.
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