Liu Chao, Wang Yafeng, Jiang Heping, Tang Weifeng, Chen Shuchen, Kang Mingqiang, Dong Changqing, Gu Haiyong
Department of Cardiothoracic Surgery, Affiliated People's Hospital of Jiangsu University Zhenjiang, Jiangsu Province, China.
Department of Cardiology, The People's Hospital of Xishuangbanna Dai Autonomous Prefecture Jinghong, Yunnan Province, China.
Int J Clin Exp Med. 2015 Oct 15;8(10):17664-73. eCollection 2015.
The aim of this study was to evaluate the association between CTLA-4 +49 G>A polymorphism and esophageal cancer (EC) susceptibility in a hospital based case-control study and a subsequent meta-analysis. We implemented genotyping analyses for CTLA-4 +49 G>A polymorphism with 629 esophageal squamous cell carcinoma cases and 686 controls in a Chinese Han population. Polymerase chain reaction ligase detection reaction (PCR-LDR) method was used to identify genotypes of CTLA-4 +49 G>A polymorphism. We first assessed the association between CTLA-4 +49 G>A polymorphism and EC risk in a hospital based case-control study, and then performed a comprehensive meta-analysis to derive a more precise estimation. Our results demonstrated that CTLA-4 +49 G>A polymorphism was not associated with EC risk. This case-control study and further meta-analysis, failed to identify the association between CTLA-4 +49 G>A polymorphism and EC risk. And additional, further well designed studies with large sample sizes and detailed gene-environment data are required.
本研究旨在通过一项基于医院的病例对照研究及后续的荟萃分析,评估细胞毒性T淋巴细胞相关抗原4(CTLA-4)基因+49位点G>A多态性与食管癌(EC)易感性之间的关联。我们对中国汉族人群中629例食管鳞状细胞癌患者和686例对照进行了CTLA-4基因+49位点G>A多态性的基因分型分析。采用聚合酶链反应连接酶检测反应(PCR-LDR)方法鉴定CTLA-4基因+49位点G>A多态性的基因型。我们首先在一项基于医院的病例对照研究中评估CTLA-4基因+49位点G>A多态性与食管癌风险之间的关联,然后进行全面的荟萃分析以得出更精确的估计。我们的结果表明,CTLA-4基因+49位点G>A多态性与食管癌风险无关。这项病例对照研究及进一步的荟萃分析未能确定CTLA-4基因+49位点G>A多态性与食管癌风险之间的关联。此外,还需要更多设计良好、样本量较大且有详细基因-环境数据的研究。