Abstract
Relapse is the major cause of mortality in patients with acute myeloid leukemia (AML) after allogeneic hematopoietic stem cell transplantation (allo-HSCT). Effective preventive intervention in high-risk AML may be crucial. In this study, we investigated the clinical efficacy and safety of low dose decitabine (DAC) as part of a modified Busulfan-Cyclophosphamide (Bu-Cy) regimen for high-risk AML patients undergoing allo-HSCT to reduce relapse rate. Fifty-nine patients received DAC (20 mg/m2/d, i.v.) for 5 days, followed by modified Bu-Cy (DAC group). A matched-pair control (CON) group of 177 patients (matched 1:3) received modified Bu-Cy only. The differences were more substantial among patients with active disease: 2-year OS, 80.7% (DAC) versus 43.5% (CON), P = 0.011 and 2-year LFS, 64.9% (DAC) versus 39.2% (CON), P = 0.024. Median time to relapse was 8 months (DAC) versus 5 months (CON) for the entire groups and 6.5 months (DAC) versus 3.5 months (CON) for patients with active disease. In summary, our data indicated that the conditioning regimen containing low dose DAC may confer a survival advantage in high-risk AML patients with active disease undergoing allo-HSCT, and a prospective randomized trial is warranted to confirm these observations.
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Acknowledgements
This work was supported by research grants from National Natural Science Foundation of China (81873443, 82070162, 81900175, 81400155, 81700139), Jiangsu Provincial Medical Talent (ZDRCA2016045), Major Natural Science Research Projects in institutions of higher education of Jiangsu Province (19KJA210002), The Key Science Research Project of Jiangsu Commission of Health (K2019022), Translational Research Grant of NCRCH (2020ZKZC04) and Natural Science Foundation of Jiangsu Province (BK20190181, BK20201169), the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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Tang, X., Valdez, B.C., Ma, Y. et al. Low-dose decitabine as part of a modified Bu-Cy conditioning regimen improves survival in AML patients with active disease undergoing allogeneic hematopoietic stem cell transplantation. Bone Marrow Transplant 56, 1674–1682 (2021). https://doi.org/10.1038/s41409-021-01238-5
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DOI: https://doi.org/10.1038/s41409-021-01238-5
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