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Prognostic Value of microRNA-9 in Various Cancers: a Meta-analysis #MMPMID27844330
Zhang Y; Zhou J; Sun M; Sun G; Cao Y; Zhang H; Tian R; Zhou L; Duan L; Chen X; Lun L
Pathol Oncol Res 2017[]; 23 (3): 573-82 PMID27844330show ga
Recently, there are more and more evidences from studies have revealed the association between microRNA-9 (miR-9) expression and outcome in multiple cancers, but inconsistent results have also been reported. It is necessary to rationalize a meta analysis of all available data to clarify the prognostic role of miR-9. Eligible studies were selected through multiple search strategies and the quality was assessed by MOOSE. Data was extracted from studies according to the key statistics index. All analyses were performed using STATA software. Twenty studies were selected in the meta-analysis to evaluate the prognostic role of miR-9 in multiple tumors. MiR-9 expression level was an independent prognostic biomarker for OS in tumor patients using multivariate and univariate analyses. High expression levels of miR-9 was demonstrated to associated with poor overall survival (OS) (HR?=?2.23, 95 % CI: 1.56?3.17, P?0.05) and recurrence free survival/progress free survival (RFS/PFS) (HR?=?2.08, 95 % CI: 1.33?3.27, P?0.05). Subgroup analysis showed that residence region (China and Japan), sample size, cancer type (solid or leukemia), follow-up months and analysis method (qPCR) did not alter the predictive value of miR-9 on OS in various cancers. Furthermore, no significant associations were detected for miR-9 expression and lymph node metastasis or distant metastasis. The present results suggest that promoted miR-9 expression is associated with poor OS in patients with general cancers.Electronic supplementary material: The online version of this article (doi:10.1007/s12253-016-0148-4) contains supplementary material, which is available to authorized users.