ArticleJournal of clinical immunology2026
αβT/CD19-depleted Allogeneic Stem Cell Transplantation in Adults with Inborn Errors of Immunity.
Article in Journal of clinical immunology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- How I Treat: Transplantation for primary immune regulatory diseases and inflammatory disorders.Journal of human immunity · 2026Article
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Authors and funding
15 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeAllogeneic hematopoietic stem cell transplantation (allo-HSCT) is successful in pediatric patients with inborn errors of immunity (IEI), but its use in adults is complicated by pre-existing organ damage and increased risk of treatment-related mortality. Ex vivo graft engineering using αβTCR/CD19 depletion has shown promising safety profiles in pediatric IEI, yet evidence in adults is limited. We assessed the feasibility and outcomes of αβTCR/CD19-depleted allo-HSCT in adults with IEI, focusing on engraftment, immune reconstitution, and clinical outcomes.
methodsWe included 9 adults with IEI and 1 with VEXAS (age 21-51). IEIs included CTLA4HI, APDS, DOCK8, ALPS, DADA2, CVID2, and HA20, with Immune Deficiency and Dysregulation Activity (IDDA) scores of 17-92. αβTCR/CD19-depleted allografts from related, unrelated or haplo-identical donors were used after antithymocyte globulin (ATG) and myeloablative conditioning (thiotepa, melphalan, and fludarabine). Post-transplant immunoprophylaxis included mycophenolate mofetil; 4/10 patients received additional transplant-associated immunosuppression.
resultsAll patients achieved primary engraftment. One patient with secondary rejection successfully underwent a second allo-HSCT. 5 patients developed grade 2-4 acute GvHD; no chronic GvHD was observed. One patient with GvHD died from COVID-19. All remaining 9 patients were successfully tapered off immunosuppression and showed improved IDDA scores. At 6 months NK, γδT, B and CD8 + T cells normalized; CD4 + numbers reached 149 cells/µl at 1 year. Most patients were successfully vaccinated and could stop immunoglobulin substitution.
conclusionIn conclusion, ex vivo graft engineering using αβTCR/CD19 depletion was feasible in adults with IEI. Clinical outcomes are encouraging, but need to be confirmed in larger studies.
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