Abstract
The impact of adverse risk genetic profiles on outcomes in acute myeloid leukemia (AML) patients following allogeneic hematopoietic stem cell transplantation (HCT) has not been fully elucidated. Accordingly, we have profiled somatic mutations at diagnosis using next-generation sequencing (NGS) in 178 AML patients who received allogeneic HCT. NGS revealed 598 somatic mutations in 165/178 patients (92.7%). Frequently mutated genes include DNMT3A, TET2, NPM1, RUNX1, IDH2, and FLT3. Commonly detected cytogenetic profiles include normal karyotype, trisomy 8, monosomal karyotype (MK), deletion 5, complex karyotype (CK), and monosomy 7. In univariate analyses, TP53 mutation, MK, CK, and monosomy 7 were associated with decreased overall survival (OS), relapse-free survival (RFS), and a higher relapse incidence (RI). We defined adverse molecular-genetic profile as harboring at least one of the molecular/genetic abnormalities of TP53 mutation, MK, CK, monosomy 7, and deletion 5. The patients harboring adverse molecular-genetic profile (n = 30) showed a lower 2-year OS (24.9% vs. 57.9%; p = 0.003), RFS (23.7% vs. 57.9%; p = 0.002), and higher RI (47.2% and 17.2%; p = 0.001) after HCT when compared to patients without those lesions. Multivariate analysis confirmed adverse molecular-genetic profile as an independent prognostic factor, associated with decreased OS (HR 2.19), RFS (HR 2.23), and higher RI (HR 2.94).
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Acknowledgements
TK is supported by scholarship from the Natural Sciences and Engineering Research Council of Canada (NSERC) (PGS-D). ZZ acknowledges support from NSERC (RGPIN-2017-06743). DDHK acknowledges support from the Leukemia & Lymphoma Society of Canada, New Idea Award (2017-522193), and from the Princess Margaret Cancer Foundation. Lastly, authors would like to thank anonymous reviewers for providing valuable and detailed comments on our manuscript.
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A. Schuh and DK designed the study; GD-R, A. Schuh, and DK collected samples and performed experiments; TK, TS, J-MC, ZZ, and DK analyzed the sequencing data and performed computational analyses; GD-R, TK, IN-B, KHK, A. Schuh, and DK interpreted the data and statistical analyses; and GD-R, TK, IN-B, ZZ, A. Schuh, and DK wrote the paper. All authors reviewed and approved the paper.
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Daher-Reyes, G., Kim, T., Novitzky-Basso, I. et al. Prognostic impact of the adverse molecular-genetic profile on long-term outcomes following allogeneic hematopoietic stem cell transplantation in acute myeloid leukemia. Bone Marrow Transplant 56, 1908–1918 (2021). https://doi.org/10.1038/s41409-021-01255-4
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DOI: https://doi.org/10.1038/s41409-021-01255-4
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