2018
DOI: 10.1371/journal.pgen.1007186
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Identifying and exploiting trait-relevant tissues with multiple functional annotations in genome-wide association studies

Abstract: Genome-wide association studies (GWASs) have identified many disease associated loci, the majority of which have unknown biological functions. Understanding the mechanism underlying trait associations requires identifying trait-relevant tissues and investigating associations in a trait-specific fashion. Here, we extend the widely used linear mixed model to incorporate multiple SNP functional annotations from omics studies with GWAS summary statistics to facilitate the identification of trait-relevant tissues, … Show more

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Cited by 30 publications
(42 citation statements)
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“…Although the linear (weighted) kernels are still most widely applied in genetic association studies, owing to its biological interpretability and computational efficiency, there have been recent attempts to design kernels that adapt to more complex signal structures by taking into account prior biological knowledge. For example, new variance component kernels have been proposed to accommodate functional annotations of noncoding variations in the mixed‐effects model framework (Hao, Zeng, Zhang, & Zhou, ; Z. He, Xu, Lee, & Ionita‐Laza, ).…”
Section: Kernel Designs and Multiple Kernelsmentioning
confidence: 99%
“…Although the linear (weighted) kernels are still most widely applied in genetic association studies, owing to its biological interpretability and computational efficiency, there have been recent attempts to design kernels that adapt to more complex signal structures by taking into account prior biological knowledge. For example, new variance component kernels have been proposed to accommodate functional annotations of noncoding variations in the mixed‐effects model framework (Hao, Zeng, Zhang, & Zhou, ; Z. He, Xu, Lee, & Ionita‐Laza, ).…”
Section: Kernel Designs and Multiple Kernelsmentioning
confidence: 99%
“…Following [8], we partially validated the identified trait-relevant tissue/cell types for the GWAS diseases by searching PubMed. We reasoned that, if the tissue or cell type is relevant to the disease of interest, then there would be previous publications studying the disease in the particular tissue or cell type.…”
Section: Relevance Between Traits and Tissues/cell Types From Pubmed mentioning
confidence: 99%
“…Next, we attempted to validate the identified trait-relevant tissue by performing a PubMed search following the main idea in [8]. Specifically, we reasoned that, if a tissue is relevant to the disease of interest, then there would be previous publications studying the disease on the particular tissue.…”
Section: Real Data Application: Inferring Trait-relevant Tissues Withmentioning
confidence: 99%
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