The Expression and Clinical Significance of MicroRNA-409-3p in Acute Myeloid Leukemia.

BACKGROUND:MicroRNA-409-3p, is down-regulated in a variety of malignant diseases. However, the expression level and clinical value of microRNA-409-3p in acute myeloid leukemia has not yet been systematically studied. METHODS:We collected 88 bone marrow samples derived from 73 patients with acute myeloid leukemia and 15 healthy controls. Then we evaluated the expression of microRNA-409-3p by quantitative real-time PCR. RESULTS:The results revealed that compared with the healthy controls, microRNA-409-3p expression in a newly diagnosed group was significantly lower (p < 0.001). In addition, the microRNA-409-3p expression in the complete remission group was strikingly higher compared to that of the newly diagnosed group (p < 0.001). There was a correlation between microRNA-409-3p expression and white blood cells (p = 0.021). Most importantly, the micro-RNA-409-3p low expression group indicated a shorter event-free survival compared with microRNA-409-3p high expression group by using Kaplan-Meier analysis (p < 0.0438). CONCLUSIONS:The microRNA-409-3p expression level could be a novel potential biomarker for acute myeloid leukemia diagnosis and prognosis, providing a new therapeutic strategy for acute myeloid leukemia treatment.

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