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A global overview of pleiotropy and genetic architecture in complex traits
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A global overview of pleiotropy and genetic architecture in complex traits
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Journal Article
A global overview of pleiotropy and genetic architecture in complex traits
2019
Overview
After a decade of genome-wide association studies (GWASs), fundamental questions in human genetics, such as the extent of pleiotropy across the genome and variation in genetic architecture across traits, are still unanswered. The current availability of hundreds of GWASs provides a unique opportunity to address these questions. We systematically analyzed 4,155 publicly available GWASs. For a subset of well-powered GWASs on 558 traits, we provide an extensive overview of pleiotropy and genetic architecture. We show that trait-associated loci cover more than half of the genome, and 90% of these overlap with loci from multiple traits. We find that potential causal variants are enriched in coding and flanking regions, as well as in regulatory elements, and show variation in polygenicity and discoverability of traits. Our results provide insights into how genetic variation contributes to trait variation. All GWAS results can be queried and visualized at the GWAS ATLAS resource (
https://atlas.ctglab.nl
).
Systematic analyses of large-scale genome-wide association data provide an overview of pleiotropy and genetic architecture for hundreds of human complex traits and diseases.
Publisher
Nature Publishing Group US,Nature Publishing Group
