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Prognostic Value of miR-21 in Various Cancers: An Updating Meta-Analysis

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  • Xin Zhou
  • Xiaping Wang
  • Zebo Huang
  • Jian Wang
  • Wei Zhu
  • Yongqian Shu
  • Ping Liu

Abstract

Background: Recently, more and more studies investigated the value of microRNA (miRNA) as a diagnostic or prognostic biomarker in various cancers. MiR-21 was found dysregulated in almost all types of cancers. While the prognostic role of miR-21 in many cancers has been studied, the results were not consistent. Methods: We performed a meta-analysis to investigate the correlation between miR-21 and survival of general cancers by calculating pooled hazard ratios (HR) and 95% confidence intervals (CI). Results: The pooled results of 63 published studies showed that elevated miR-21 was a predictor for poor survival of general carcinomas, with pooled HR of 1.91 (95%CI: 1.66–2.19) for OS, 1.42 (95% CI: 1.16–1.74) for DFS and 2.2 (95% CI: 1.64–2.96) for RFS/CSS. MiR-21 was also a prognostic biomarker in the patients who received adjuvant therapy, with pooled HR of 2.4 (95%CI: 1.18–4.9) for OS. Conclusions: Our results showed that miR-21 could act as a significant biomarker in the prognosis of various cancers. Further studies are warranted before the application of the useful biomarker in the clinical.

Suggested Citation

  • Xin Zhou & Xiaping Wang & Zebo Huang & Jian Wang & Wei Zhu & Yongqian Shu & Ping Liu, 2014. "Prognostic Value of miR-21 in Various Cancers: An Updating Meta-Analysis," PLOS ONE, Public Library of Science, vol. 9(7), pages 1-11, July.
    • Handle: RePEc:plo:pone00:0102413
    DOI: 10.1371/journal.pone.0102413
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