Gene--environment-wide association studies: emerging approaches.

Gene--environment-wide association studies: emerging approaches.
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DOI:
10.1038/nrg2764
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发表时间:
2010-04
期刊:
Nature reviews. Genetics
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其他
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尽管最近的全基因组关联(GWA)研究取得了成果,但已确定的变异只能解释大多数复杂疾病的一小部分遗传性。这种无法解释的遗传性可能部分是由于基因-环境(G×E)相互作用或涉及多个基因和暴露的更复杂的途径。本文提供了可用的流行病学设计和统计分析方法的教程,用于研究特定的G×E相互作用和选择最合适的方法。我讨论了正在开发的研究整个路径的方法和挖掘GWA数据中相互作用的可用技术。我还探索了将假设驱动的基于路径的方法与“不可知论”的GWA研究结合起来的方法。
Despite the yield of recent genome-wide association (GWA) studies, the identified variants explain only a small proportion of the heritability of most complex diseases. This unexplained heritability could be partly due to gene-environment (G×E) interactions or more complex pathways involving multiple genes and exposures. This article provides a tutorial on the available epidemiological designs and statistical analysis approaches for studying specific G×E interactions and choosing the most appropriate methods. I discuss the approaches that are being developed to study entire pathways and available techniques for mining interactions in GWA data. I also explore approaches to marrying hypothesis-driven pathway-based approaches with “agnostic” GWA studies.
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