High-sensitivity pattern discovery in large, paired multiomic datasets.

High-sensitivity pattern discovery in large, paired multiomic datasets.
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DOI:
10.1093/bioinformatics/btac232
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发表时间:
2022-06-24
期刊:
Bioinformatics (Oxford, England)
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现代生物筛选产生大量测量结果,识别和解释特征之间具有统计学意义的关联至关重要。在从同一组样本收集多个高维数据集的实验中,以提供高统计功效和错误发现率 (FDR) 控制的方式识别数据集之间的相关特征组非常有用。在这里,我们提出了一种新颖的分层框架 HAllA(分层对抗所有关联测试),用于配对高维数据集之间的结构化关联发现。 HAllA 有效地将分层假设检验与 FDR 校正相结合,以揭示连续和/或分类数据之间显着的线性和非线性块关系。我们使用已知关联结构的异构合成数据集来优化和评估 HAllA,其中 HAllA 在一系列常见的相似性度量中优于所有对所有和其他块测试方法。然后,我们将 HAllA 应用于一系列真实世界的多组学数据集,揭示了基因表达与宿主免疫活动、微生物组和宿主转录组、代谢组学分析和人类健康表型之间的新关联。 HAllA 的开源实现以及文档、演示数据集和用户组可在 http://huttenhower.sph.harvard.edu/halla 上免费获得。 补充数据可在生物信息学在线获取。
Modern biological screens yield enormous numbers of measurements, and identifying and interpreting statistically significant associations among features are essential. In experiments featuring multiple high-dimensional datasets collected from the same set of samples, it is useful to identify groups of associated features between the datasets in a way that provides high statistical power and false discovery rate (FDR) control. Here, we present a novel hierarchical framework, HAllA (Hierarchical All-against-All association testing), for structured association discovery between paired high-dimensional datasets. HAllA efficiently integrates hierarchical hypothesis testing with FDR correction to reveal significant linear and non-linear block-wise relationships among continuous and/or categorical data. We optimized and evaluated HAllA using heterogeneous synthetic datasets of known association structure, where HAllA outperformed all-against-all and other block-testing approaches across a range of common similarity measures. We then applied HAllA to a series of real-world multiomics datasets, revealing new associations between gene expression and host immune activity, the microbiome and host transcriptome, metabolomic profiling and human health phenotypes. An open-source implementation of HAllA is freely available at http://huttenhower.sph.harvard.edu/halla along with documentation, demo datasets and a user group. Supplementary data are available at Bioinformatics online.
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