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  • Title: Decreased expression of long non-coding RNA MEG3 acts as a potential predictor biomarker in progression and poor prognosis of osteosarcoma.
    Author: Tian ZZ, Guo XJ, Zhao YM, Fang Y.
    Journal: Int J Clin Exp Pathol; 2015; 8(11):15138-42. PubMed ID: 26823857.
    Abstract:
    INTRODUCTION: Long non-coding RNA MEG3 (lncRNA MEG3) has been showed to involve in a variety of cancers. However, the association between lncRNA MEG3 expression level and the prognosis of osteosarcoma is still unclear. METHODS: The expression levels of lncRNA MEG3 in osteosarcoma tissues and adjacent non-tumor tissues were detected using quantitative real-time PCR (qRT-PCR). Differences in patient survival were determined using the Kaplan-Meier method and a log-rank test. A Cox proportional hazards regression analysis was used for univariate and multivariate analyses of prognostic values. RESULTS: Our findings showed that expression of lncRNA MEG3 was clearly lower in osteosarcoma tissues compared with adjacent non-tumor tissues. The expression of lncRNA MEG3 was associated with clinical stage and distant metastasis (P<0.05). Kaplan-Meier analysis showed that patients with low lncRNA MEG3 expression had a shorter overall survival (log-rank test, P<0.05). Furthermore, multivariate analysis revealed that decreased expression of lncRNA MEG3, advanced clinical stage and distant metastasis were all independent predictors to overall survival of osteosarcoma patients. CONCLUSIONS: Downregulation of lncRNA MEG3 was associated with poor overall survival of osteosarcoma. LncRNA MEG3 could be a useful biomarker for progression and prognosis of osteosarcoma.
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