Cited by 580Genetic Associations and EpidemiologyGenomics and Chromatin DynamicsGenetic Mapping and Diversity in Plants and Animals

Chromatin marks identify critical cell types for fine mapping complex trait variants

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Trynka, Gosia, Sandor, Cynthia, Han, Buhm, Xu, Han, Stranger, Barbara E, Liu, X Shirley, Raychaudhuri, Soumya·2013·Nature Genetics

Abstract

If trait-associated variants alter regulatory regions, then they should fall within chromatin marks in relevant cell types. However, it is unclear which of the many marks are most useful in defining cell types associated with disease and fine mapping variants. We hypothesized that informative marks are phenotypically cell type specific; that is, SNPs associated with the same trait likely overlap marks in the same cell type. We examined 15 chromatin marks and found that those highlighting active gene regulation were phenotypically cell type specific. Trimethylation of histone H3 at lysine 4 (H3K4me3) was the most phenotypically cell type specific (P < 1 × 10(-6)), driven by colocalization of variants and marks rather than gene proximity (P < 0.001). H3K4me3 peaks overlapped with 37 SNPs for plasma low-density lipoprotein concentration in the liver (P < 7 × 10(-5)), 31 SNPs for rheumatoid arthritis within CD4(+) regulatory T cells (P = 1 × 10(-4)), 67 SNPs for type 2 diabetes in pancreatic islet cells (P = 0.003) and the liver (P = 0.003), and 14 SNPs for neuropsychiatric disease in neuronal tissues (P = 0.007). We show how cell type-specific H3K4me3 peaks can inform the fine mapping of associated SNPs to identify causal variation.

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  • Schizophrenia GWAS SNPs occur more often than chance in cis-regulatory functional genomic elements such as enhancers or eQTL SNPs.

    “Indeed, GWAS SNPs associated with SCZ risk occur more often than expected by chance in cis-regulatory functional genomic elements, such as enhancers or eQTL SNPs3,21–24.”
  • GWAS SNPs associated with schizophrenia risk occur more often than expected by chance in cis-regulatory functional genomic elements, such as enhancers or eQTL SNPs.

    “Indeed, GWAS SNPs associated with SCZ risk occur more often than expected by chance in cis-regulatory functional genomic elements, such as enhancers or eQTL SNPs3,21–24.”

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Authors
Trynka, G., Sandor, C., Han, B., Xu, H., Stranger, B. E., Liu, X. S., & Raychaudhuri, S.
Affiliations
  • Brigham and Women's Hospital (US)
  • Broad Institute (US)
  • Harvard University (US)
Corresponding author
Raychaudhuri, Soumya
Venue
Nature Genetics
Published
2012-12-23
Volume
45
Issue
2
Pages
124-130
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W2133009026
Cited by
580
References
56
Citations by year
2026: 15 · 2025: 24 · 2024: 40 · 2023: 30 · 2022: 38 · 2021: 55 · 2020: 40 · 2019: 46 · 2018: 49 · 2017: 62 · 2016: 56 · 2015: 52 · 2014: 51 · 2013: 22
FWCI
24.09
Type
journal article
Language
en
Open access
Locations
  • Nature Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • Research Explorer (The University of Manchester) (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Seoul National University Open Repository (Seoul National University) (submittedVersion)
Funders
  • National Human Genome Research Institute (R01HG004069, U01HG007033, U01 HG0070033)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (UH2AR067677, K08AR055688)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Mapping and Diversity in Plants and Animals
Keywords
chromatin marks, H3K4me3, cell type specificity, fine mapping, complex traits, regulatory variants, causal variants, low-density lipoprotein, rheumatoid arthritis, CD4+ regulatory T cells, type 2 diabetes, pancreatic islets, neuropsychiatric disorders, neurons
MeSH terms
Arthritis, Rheumatoid, Chromatin, Diabetes Mellitus, Type 2, Genetic Markers, Histones, Humans, Nervous System Diseases, Phenotype, Software, Polymorphism, Single Nucleotide, Databases, Genetic

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