Introduction: In patients with acute myeloid leukemia (AML), allogeneic hematopoietic stem cell transplantation (HSCT) remains the priority treatment option as the most effective prevention of relapse. When an HLA-matched sibling is available, these transplants are preferred.
Objectives: We stratificated patients according to risk, disease state (an active disease, the 1st or 2nd complete remission ‒ CR1, CR2, which was achieved after the 1st or 2nd induction) and type of graft (from brother or sister). Finally, the overall survival (OS) of patients in individual groups was evaluated.
Material And Methods: The retrospective single-center study included 104 transplantations in 97 adult patients with AML who underwent HSCT from matched sibling donor in a period of 10 years between January 2011 and December 2020.
Results: 54 patients (55.7%) were alive as of the January 1, 2022. The median OS of the entire group, as well as the cohort with favorable (5y-OS 75.0%) and intermediate prognosis risk (5y‒OS 78.5%) was not reached. We found that patients, who required second induction therapy to achieve CR, had poorer OS after allogeneic HSCT, median 20.7 months (95% CI, 6.5-35.5) than those who achieved CR after first induction, median not reached (95% CI, 63.5‒63.5, p=0.0048). Statistically significant effect on OS shows transplantation in CR2 (HR 6.76, CI 95% 2.19‒20.80, p=0.0009), In addition, this parameter influenced OS more than achieving CR up to the 2nd induction course (HR 2.44, CI 95% 1.17‒5.11; p=0.0180) or entry to transplantation without CR (HR 2.81, CI 95% 1.09‒7.26; p=0.0326).
Conclusion: The results presented in the work show the high efficiency of HSCT in each risk group. The number of induction therapies required to achieve CR is a good prognostic factor. The gender of a sibling has no impact on OS (Tab. 11, Fig. 7, Ref. 18). Text in PDF www.elis.sk Keywords: acute myeloid leukemia, allogeneic hematopoietic stem cell transplantation, overall survival, remission status, donor tender.
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