Journal
NATURE COMMUNICATIONS
Volume 10, Issue -, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/s41467-019-12228-z
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Funding
- National Institutes of Health [N01-HC-25195, HHSN268201500001I]
- Division of Intramural Research, National Heart, Lung, and Blood Institute, National Institutes of Health
- Division of Intramural Research, National Heart, Lung, and Blood Institute
- Center for Information Technology, National Institutes of Health, Bethesda, MD
- NHLBI [K99HL136875]
- National Heart, Lung, and Blood Institute, National Institutes of Health, Department of Health and Human Services [HHSN268201700001I, HHSN268201700002I, HHSN268201700003I, HHSN268201700004I, HHSN268201700005I]
- Swedish Research Council [2016-00598]
- [5RC2HL102419]
- [R01NS087541]
- Swedish Research Council [2016-00598] Funding Source: Swedish Research Council
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Identifying methylation quantitative trait loci (meQTLs) and integrating them with disease-associated variants from genome-wide association studies (GWAS) may illuminate functional mechanisms underlying genetic variant-disease associations. Here, we perform GWAS of >415 thousand CpG methylation sites in whole blood from 4170 individuals and map 4.7 million cis- and 630 thousand trans-meQTL variants targeting >120 thousand CpGs. Independent replication is performed in 1347 participants from two studies. By linking cis-meQTL variants with GWAS results for cardiovascular disease (CVD) traits, we identify 92 putatively causal CpGs for CVD traits by Mendelian randomization analysis. Further integrating gene expression data reveals evidence of cis CpG-transcript pairs causally linked to CVD. In addition, we identify 22 trans-meQTL hotspots each targeting more than 30 CpGs and find that trans-meQTL hotspots appear to act in cis on expression of nearby transcriptional regulatory genes. Our findings provide a powerful meQTL resource and shed light on DNA methylation involvement in human diseases.
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