Journal
NATURE
Volume 590, Issue 7845, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41586-020-03145-z
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Funding
- US National Institutes of Health [HG008155, HG009446, HG009088, HG007234, HG007610, GM113708, MH109978, MH119509, AG058002]
- National Institutes of Health training grant [GM087237]
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Annotating the molecular basis of human disease using EpiMap, a compendium of 10,000 epigenomic maps, has revealed the importance of dense, rich, high-resolution epigenomic annotations for investigating complex traits. The study used EpiMap to annotate genetic loci associated with traits and predict trait-relevant tissues and candidate target genes, showing extensive pleiotropy in top-scoring loci.
Annotating the molecular basis of human disease remains an unsolved challenge, as 93% of disease loci are non-coding and gene-regulatory annotations are highly incomplete(1-3). Here we present EpiMap, a compendium comprising 10,000 epigenomic maps across 800 samples, which we used to define chromatin states, high-resolution enhancers, enhancer modules, upstream regulators and downstream target genes. We used this resource to annotate 30,000 genetic loci that were associated with 540 traits(4), predicting trait-relevant tissues, putative causal nucleotide variants in enriched tissue enhancers and candidate tissue-specific target genes for each. We partitioned multifactorial traits into tissue-specific contributing factors with distinct functional enrichments and disease comorbidity patterns, and revealed both single-factor monotropic and multifactor pleiotropic loci. Top-scoring loci frequently had multiple predicted driver variants, converging through multiple enhancers with a common target gene, multiple genes in common tissues, or multiple genes and multiple tissues, indicating extensive pleiotropy. Our results demonstrate the importance of dense, rich, high-resolution epigenomic annotations for the investigation of complex traits.
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