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  • Title: Down-Regulation of miR-186 Correlates with Poor Survival in de novo Acute Myeloid Leukemia.
    Author: Zhang TJ, Wang YX, Yang DQ, Yao DM, Yang L, Zhou JD, Deng ZQ, Wen XM, Guo H, Ma JC, Lin J, Qian J.
    Journal: Clin Lab; 2016; 62(1-2):113-20. PubMed ID: 27012040.
    Abstract:
    BACKGROUND: MicroRNA-186 (miR-186) plays an important role in the pathogenesis of several cancers. Our study was intended to investigate the expression status and the prognostic implication of miR-186 in acute myeloid leukemia (AML). METHODS: Real-time quantitative PCR was carried out in 112 de novo AML patients and 28 controls. RESULTS: The level of miR-186 expression in AML was significantly down-regulated compared to normal controls (p < 0.001). Patients with low miR-186 expression presented significantly older age than those with high miR-186 expression (p = 0.004). MiR-186high patients had a significantly higher frequency of CEBPA mutation than miR-186low patients (20% and 4%, respectively, p = 0.022). In addition, miR-186low patients had a significantly lower complete remission (CR) rate (30% vs. 53%, respectively, p = 0.028) than miR-186high patients. Moreover, miR-186low patients showed significantly shorter overall survival (OS) time than miR-186high patients in both whole AML and non-M3 patients (p = 0.023 and 0.026, respectively). Additionally, the adverse prognostic impact of miR-186 down-regulation was also shown in both whole AML and non-M3 patients without CEBPA mutation (p = 0.017 and 0.023, respectively). CONCLUSIONS: Our study suggests that miR-186 down-regulation is a frequent event and predicts poor prognosis in de novo AML patients.
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