Ruxolitinib Plus Basiliximab Therapy for Steroid-Refractory Acute Graft-Versus-Host Disease in Unrelated Cord Blood Transplantation: A Large-Scale Study.
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Steroid-refractory (SR) acute graft-versus-host disease (aGVHD) is a major cause of mortality after allogeneic hematopoietic stem cell transplantation. We aimed to evaluate the effectiveness and safety of ruxolitinib plus basiliximab for treating SR-aGVHD after unrelated cord blood transplantation (UCBT). Among the 1154 patients with hematological malignancies who underwent UCBT between February 2014 and May 2022, 198 patients with grade II to IV SR-aGVHD were enrolled, 112 of whom were treated with basiliximab alone (basiliximab group) and 86 of whom received basiliximab plus ruxolitinib (combined therapy group). The combined therapy group demonstrated a significantly higher complete response rate (CRR) on day 28 (36.0%) than did the basiliximab group (12.5%, P < .001). SR-aGVHD patients were further stratified into standard-risk and high-risk groups using the refined Minnesota aGVHD risk score. For standard-risk patients, combined therapy significantly improved the CRR (51.1% versus 13.6%, P < .001) and 3-year overall survival (74.5% versus 52.4%, P = .033). However, high-risk patients did not exhibit the same benefits. Compared with basiliximab monotherapy, ruxolitinib plus basiliximab therapy was an effective therapy for patients with standard-risk SR-aGVHD following UCBT. The effectiveness of combined therapy in high-risk patients was not apparent, indicating the need for other treatments.