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Circulating microRNAs (miRNAs) in plasma have the potential to become diagnostic and prognostic biomarkers for various cancers. This study hopes to use plasma circulating miRNAs as biomarkers for diagnosis and prognosis of glioma patients. METHOD: In this study, the plasma circulating miRNAs of 124 patients with glioma and 36 controls was collected to detect the relative expression of miR-2276-5p, and the specificity and sensitivity of the diagnosis were verified by ROC curve. The follow-up survival status was analyzed by cox regression analysis. RESULT: In the GSE 139031 database, it was found that the expression of circulating miR-2276-5p in plasma of glioma patients was significantly lower than that of patients with non-gliomas. Using our plasma samples, and it is indicated that the expression of circulating miR-2276-5p in plasma is lower than that of healthy patients, and compared with low-grade gliomas, patients with high-grade gliomas have a lower expression of circulating miR-2276-5p. ROC curve analysis found that the AUC value was 0.851. The low expression of circulating miR-2276-5p in plasma of glioma patients indicates a poor prognosis of glioma patients, After univariate and multifactorial cox regression analysis, which can be used as an independent prognostic risk factor for glioma patients (P&amp;lt; 0.05). CONCLUSION: The expression of circulating miR-2276-5p in plasma of glioma patients was significantly lower than that of the control group, compared with low-grade gliomas, patients with high-grade gliomas have a lower expression of circulating miR-2276-5p. The lower the relative expression of circulating miR-2276-5p indicated that glioma patients had a worse prognosis.

BIOM-63. DIAGNOSIS AND PROGNOSTIC SIGNIFICANCE OF CIRCULATING miR-2276-5p IN PLASMA OF GLIOMA PATIENTS