TY - JOUR ID - 30672 TI - Expression of microRNA-218 and its Clinicopathological and Prognostic Significance in Human Glioma Cases JO - Asian Pacific Journal of Cancer Prevention JA - APJCP LA - en SN - 1513-7368 Y1 - 2015 PY - 2015 VL - 16 IS - 5 SP - 1839 EP - 1843 KW - Glioma KW - microRNA-218 KW - disease-free survival KW - Overall survival DO - N2 - Background: MicroRNAs are a class of noncoding RNAs which regulate multiple cellular processes duringtumor development. The purpose of this report is to investigate the clinicopathological and prognostic significanceof miR-218 in human gliomas. Materials and Methods: Quantitative RT-PCR (qRT-PCR) was conducted todetect the expression of miR-218 in primary normal human astrocytes, three glioma cell lines and 98 pairedglioma and adjacent normal brain tissues.Associations of miR-218 with clinicopathological variables of gliomapatients were statistically analyzed. Finally, a survival analysis was performed using the Kaplan-Meier methodand Cox’s proportional hazards model. Results: The expression level of miR-218 in primary normal humanastrocytes was significantly higher than that in glioma cell lines (p<0.01). Also, the expression level of miR-218in glioma tissues was significantly downregulated in comparison with that in the adjacent normal brain tissues(p<0.001). Statistical analyses demonstrated that low miR-218 expression was closely associated with advancedWHO grade (p=0.002) and low Karnofsky performance score (p=0.010) of glioma patients. Kaplan-Meier analysiswith the log-rank test showed that patients with low-miR-218 expression had poorer disease-free survival andoverall survival (p=0.0045 and 0.0124, respectively). Multivariate analysis revealed that miR-218 expressionwas independently associated with the disease-free survival (p=0.009) and overall survival (p=0.004) of gliomapatients. Conclusions: Our results indicate that miR-218 is downregulated in gliomas and that its status mightbe a potential valuable biomarker for glioma patients. UR - https://journal.waocp.org/article_30672.html L1 - https://journal.waocp.org/article_30672_8c382fd89c7e2c15fb8814be607d270c.pdf ER -