Ruxolitinib and decitabine plus a busulfan-cyclophosphamide conditioning regimen for relapse prophylaxis in patients with high-risk acute myeloid leukemia or myelodysplastic syndromes
Abstract
Purpose: Relapse remains the leading cause of treatment failure in high-risk acute myeloid leukemia (AML) or myelodysplastic syndrome-IB (MDS-IB) patients after allogeneic hematopoietic stem cell transplantation (allo-HSCT). Ruxolitinib has demonstrated antileukemic activity in vitro, and decitabine has been found to be tolerable when combined with modified busulfan-cyclophosphamide (mBu/Cy) conditioning regimen. Here, we investigated the efficacy of ruxolitinib and decitabine plus a mBu/Cy conditioning regimen (Rux-Dec-mBu/Cy) in reducing relapse in high-risk AML/MDS patients (ClinicalTrials.gov identifier: NCT04582604).
Patients and methods: This prospective investigational study enrolled 58 patients between May 2020 and July 2023. These patients had either a relapsed/refractory status, remission status with adverse genetic abnormalities or positive measurable residual disease (MRD+) prior to conditioning. Ruxolitinib (days -15 to -1) and decitabine (days -15 to -10) were administered, followed by mBu/Cy conditioning. The outcomes of a historical cohort of 58 patients (matched 1:1) who received mBu/Cy are described for reference.
Results: All 58 patients achieved engraftment. With a median follow-up of 967 (464-1597) days, the 2-year cumulative incidence of relapse was 19.0%. The probabilities of 2-year overall survival (OS), disease-free survival (DFS) and graft-versus-host disease-free, relapse-free survival (GRFS) were 70.3%, 70.6% and 65.2%, respectively. The…
How strong is the evidence?
Evidence Hub reads this as a clinical trial, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence. Reported size: 58 participants or records.
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