Abstract
Vascular endothelial growth factor (VEGF) is considered as a prime mediator of angiogenesis and has been implicated in carcinogenesis and metastasis. Various studies examined the relationship between VEGF overexpression with the clinical outcome in patients with osteosarcoma but yielded conflicting results. Electronic databases updated to April 2013 were searched to find relevant studies. A meta-analysis was conducted with eligible studies which quantitatively evaluated the relationship between VEGF overexpression and survival of patients with osteosarcoma. Survival data were aggregated and quantitatively analyzed. We performed a meta-analysis of eight studies that evaluated the correlation between VEGF overexpression and survival in patients with osteosarcoma. Combined hazard ratios suggested that VEGF overexpression had an unfavorable impact on overall survival (hazard ratio (HR) = 1.75, 95 % confidence interval (CI): 1.21–2.28) in patients with osteosarcoma for overall populations, 2.37 (1.35–3.39) in Asian studies but not in non-Asian studies (HR = 1.51, 95 % CI: 0.89–2.14). No significant heterogeneity was observed among all studies. VEGF overexpression indicates a poor prognosis for patients with osteosarcoma. However, the prognostic value of VEGF on survival in osteosarcoma patients still needs further large-scale prospective trials to be clarified.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (no. 81071487), the Social Development Program of Jiangsu Province (no. BE2010744), Medical Scientific Research Foundation of Jiangsu Province (no. H201008), the Program for Medical Talents of Jiangsu Province (no. H201122), China Postdoctoral Science Foundation (no. 20100480598), and the Shanghai Postdoctoral Sustentation Fund (no. 11R21414400), the Natural Science Foundation of Shanghai Municipal Health Bureau (no. 20114y079); the Medicine and Engineering Foundation of Shanghai Jiaotong University (no. YG2011MS33).
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Yu, XW., Wu, TY., Yi, X. et al. Prognostic significance of VEGF expression in osteosarcoma: a meta-analysis. Tumor Biol. 35, 155–160 (2014). https://doi.org/10.1007/s13277-013-1019-1
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DOI: https://doi.org/10.1007/s13277-013-1019-1