Abstract
The transforming growth factor beta (TGF-β) pathway plays a key role in oncogenesis of advanced cancers. However, the effects of TGF-β pathway on gliomas are still controversial. So, it is essential to conduct a meta-analysis to determine their correlations. Eligible studies were included, and then odds ratios (ORs), standard mean differences (SMDs), and hazard ratios (HRs) with 95 % confidence intervals (95 % CIs) were estimated. Funnel plots were available for evaluation of publication bias. In this meta-analysis, all 14 eligible studies involving 875 patients were included and conducted in China. Six studies with dichotomous data revealed altered TGF-β expression in glioma tissues was closely associated with high WHO grade (III + IV) (OR 4.39, 95 % CI 2.90–6.63; p = 0.000), meanwhile, seven studies with continuous data also demonstrated TGF-β expression intensity extremely related to high grade (SMD −2.44, 95 % CI −2.71, −2.16; p = 0.000). To our interest, TGF-β expression was associated with old age (OR 0.59, 95 % CI 0.36–0.93; p = 0.025) rather than gender (OR 1.04, 95 % CI 0.64–1.67; p = 0.884). Besides, TGF-β expression significantly correlated to 3-year-OS (n = 2; HR 2.53, 95 % CI 1.18–5.41; p = 0.017) rather than 5-year-OS (n = 1; HR 1.04, 95 % CI 0.66–1.64; p = 0.872) in glioma patients. No heterogeneity and publication bias were observed across all studies. Taken together, the present meta-analysis testifies TGF-β is potently associated with high grade and poor 3 years prognosis, and TGF-β test combined with survivin [1 Mol Neurobiol] and MMP9 [2 Mol Neurobiol] in glioma tissues should be clinically recommended as criteria of glioma grade in department of pathology.
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27 January 2017
An erratum to this article has been published.
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Acknowledgments
This study was supported by the Shandong University Science Technology Innovation Foundation (201410422123). We greatly thank Guoliang Li in Sandy lab for valuable suggestions and writing.
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The authors state that there are no conflicts of interest to disclose.
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An erratum to this article is available at https://doi.org/10.1007/s12035-017-0411-z.
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Yang, X., Lv, S., Zhou, X. et al. The Clinical Implications of Transforming Growth Factor Beta in Pathological Grade and Prognosis of Glioma Patients: A Meta-Analysis. Mol Neurobiol 52, 270–276 (2015). https://doi.org/10.1007/s12035-014-8872-9
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DOI: https://doi.org/10.1007/s12035-014-8872-9