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arXiv 2002.09644stat.MEstat.AP
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遗传家系三联体研究中的因果推断

Causal Inference in Genetic Trio Studies

Stephen Bates, Matteo Sesia, Chiara Sabatti, Emmanuel Candes

AI总结:

本研究提出一种基于遗传三联体数据的因果推断方法,利用减数分裂天然随机性,通过Digital Twin Test识别基因组因果变异区域,无需假设基因型与表型的关系,还可结合黑盒模型和额外数据提升效能。

摘要:

我们提出了一种方法,可从包含父母和子女的遗传数据中严谨地得出因果推断——即不受所有可能混杂因素影响的推断。这类数据之所以能得出因果结论,是因为减数分裂中的天然随机性可被视为高维随机实验。我们通过开发一种新型条件独立性检验,将这一观察结果转化为可落地的方法,该检验可识别基因组中包含不同因果变异的区域。所提出的Digital Twin Test(数字孪生检验)将观测到的子代与由相同父母精心构建的合成子代进行比较,以确定统计显著性,并且它可以利用任意黑盒多变量模型以及额外的非三联体遗传数据来提升检验效能。至关重要的是,我们的推断仅基于减数分裂过程中遗传物质重排的成熟数学描述,不对基因型与表型之间的关系做任何假设。

英文摘要:

We introduce a method to rigorously draw causal inferences---inferences immune to all possible confounding---from genetic data that include parents and offspring. Causal conclusions are possible with these data because the natural randomness in meiosis can be viewed as a high-dimensional randomized experiment. We make this observation actionable by developing a novel conditional independence test that identifies regions of the genome containing distinct causal variants. The proposed Digital Twin Test compares an observed offspring to carefully constructed synthetic offspring from the same parents in order to determine statistical significance, and it can leverage any black-box multivariate model and additional non-trio genetic data in order to increase power. Crucially, our inferences are based only on a well-established mathematical description of the rearrangement of genetic material during meiosis and make no assumptions about the relationship between the genotypes and phenotypes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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