Abstract
Overexpression of microRNA-99a (miR-99a) have been associated with adverse prognosis in acute myeloid leukemia (AML). Nevertheless, whether it also predicts poor outcome in post-allogeneic hematopoietic stem cell transplantation (allo-HSCT) AML patients remains unclear. To further elucidate the prognostic value of miR-99a, 74 AML patients with miR-99a expression report who underwent allo-HSCT from The Cancer Genome Atlas database were identified and grouped into either miR-99ahigh or miR-99alow based on their miR-99a expression levels relative to the median. Two groups had similar clinical and molecular characteristics except that miR-99ahigh group had fewer patients of the French-American-British M4 subtype (P = 0.018) and more frequent CEBPA mutations (P = 0.005). Univariate analysis indicated that high miR-99a expression was unfavorable for both event-free survival (EFS) and overall survival (OS; P = 0.029; P = 0.012, respectively). Multivariate analysis suggested that high miR-99a expression was an independent risk factor for both EFS and OS in AML patients who underwent allo-HSCT [hazard ratio (HR) 1.909, 95% confidence interval (CI) 1.043–3.494, P = 0.036 and HR 2.179, 95% CI 1.192–3.982, P = 0.011, respectively]. Our results further proved that high miR-99a expression could predict worse outcome in AML patients, even in those who underwent intensive post-remission therapy such as allo-HCST.
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Acknowledgements
This work was supported by grants from the National Natural Science Foundation of China (81500118, 61501519), the China Postdoctoral Science Foundation funded project (project No.2016M600443), Jiangsu Province Postdoctoral Science Foundation funded project (project No.1701184B) and PLAGH project of Medical Big Data (Project No.2016MBD-025).
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Cheng, Z., Zhou, L., Hu, K. et al. Prognostic significance of microRNA-99a in acute myeloid leukemia patients undergoing allogeneic hematopoietic stem cell transplantation. Bone Marrow Transplant 53, 1089–1095 (2018). https://doi.org/10.1038/s41409-018-0146-0
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DOI: https://doi.org/10.1038/s41409-018-0146-0
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