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December 8, 2025BloodOpen Access

An open-label phase I study of JAK inhibitor ruxolitinib with and without CTLA-4 ig abatacept for the prophylaxis of graft-versus-host ddsease and cytokine release syndrome after T-cell replete haploidentical peripheral blood hematopoietic cell transplantation

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Authors

RARamzi AbboudMNM A NashSBSamantha Bauer

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Overview

Open-label phase I trial shows safety and efficacy of ruxolitinib with abatacept in preventing GVHD and CRS after haplo-HCT.

Key Points

  • Ruxolitinib treatment resulted in no engraftment failure and a 12.5% incidence of grade II acute GVHD within 100 days.
  • Overall survival at day 180 reached 78%, with no severe cytokine release syndrome noted during the trial.
  • Phase I trial observed patients with AML, ALL, MDS, and NHL receiving ruxolitinib in two treatment regimens.
  • Results indicate low rates of acute and chronic GVHD while monitoring non-relapse mortality associated with treatment.

Cite This Study

Abboud et al. (2025) studied this question.

synapsesocial.com/papers/69362f714fa91c937236e205https://doi.org/10.1182/blood-2025-2459
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Efficacy and safety of ruxolitinib for graft-versus-host disease prophylaxis in allogeneic hematopoietic stem cell transplantation: a systematic review and meta-analysis2025 · 5 citations
  2. 2Phase II Study of Peri- and Post-Transplant Ruxolitinib for Patients With Myelofibrosis Receiving Allogeneic Hematopoietic Cell Transplantation2025 · 6 citations
  3. 3Itacitinib in combination with post-transplant cyclophosphamide and tacrolimus (ICT) as GVHD prophylaxis for reduced intensity matched donor peripheral blood stem cell hematopoietic cell transplantation: Interim analysis2025
  4. 4Ruxolitinib versus allogeneic stem cell transplantation for patients with myelofibrosis according to donor availability: A prospective multicenter phase II trial2025
  5. 5Ruxolitinib combined with decitabine-intensified modified busulfan/cyclophosphamide conditioning regimen reduces relapse after allogeneic hematopoietic stem cell transplantation in Acute Myeloid Leukemia2025