Cited by 778Epigenetics and DNA MethylationGenetic Associations and EpidemiologyBirth, Development, and Health

DNA methylation and body-mass index: a genome-wide analysis

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Dick, Katherine J, Nelson, Christopher P, Tsaprouni, Loukia, Sandling, Johanna K, Aïssi, Dylan, Wahl, Simone, Meduri, Eshwar, Morange, Pierre-Emmanuel +16 more·2014·The Lancet

Abstract

Background Obesity is a major health problem that is determined by interactions between lifestyle and environmental and genetic factors. Although associations between several genetic variants and body-mass index (BMI) have been identified, little is known about epigenetic changes related to BMI. We undertook a genome-wide analysis of methylation at CpG sites in relation to BMI.Methods 479 individuals of European origin recruited by the Cardiogenics Consortium formed our discovery cohort. We typed their whole-blood DNA with the Infinium HumanMethylation450 array. After quality control, methylation levels were tested for association with BMI. Methylation sites showing an association with BMI at a false discovery rate q value of 0·05 or less were taken forward for replication in a cohort of 339 unrelated white patients of northern European origin from the MARTHA cohort. Sites that remained significant in this primary replication cohort were tested in a second replication cohort of 1789 white patients of European origin from the KORA cohort. We examined whether methylation levels at identified sites also showed an association with BMI in DNA from adipose tissue (n=635) and skin (n=395) obtained from white female individuals participating in the MuTHER study. Finally, we examined the association of methylation at BMI-associated sites with genetic variants and with gene expression.Findings 20 individuals from the discovery cohort were excluded from analyses after quality-control checks, leaving 459 participants. After adjustment for covariates, we identified an association (q value ≤0·05) between methylation at five probes across three different genes and BMI. The associations with three of these probes--cg22891070, cg27146050, and cg16672562, all of which are in intron 1 of HIF3A--were confirmed in both the primary and second replication cohorts. For every 0·1 increase in methylation β value at cg22891070, BMI was 3·6% (95% CI 2·4-4·9) higher in the discovery cohort, 2·7% (1·2-4·2) higher in the primary replication cohort, and 0·8% (0·2-1·4) higher in the second replication cohort. For the MuTHER cohort, methylation at cg22891070 was associated with BMI in adipose tissue (p=1·72 × 10(-5)) but not in skin (p=0·882). We observed a significant inverse correlation (p=0·005) between methylation at cg22891070 and expression of one HIF3A gene-expression probe in adipose tissue. Two single nucleotide polymorphisms--rs8102595 and rs3826795--had independent associations with methylation at cg22891070 in all cohorts. However, these single nucleotide polymorphisms were not significantly associated with BMI.Interpretation Increased BMI in adults of European origin is associated with increased methylation at the HIF3A locus in blood cells and in adipose tissue. Our findings suggest that perturbation of hypoxia inducible transcription factor pathways could have an important role in the response to increased weight in people.Funding The European Commission, National Institute for Health Research, British Heart Foundation, and Wellcome Trust.

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Authors
Dick, K. J., Nelson, C. P., Tsaprouni, L., Sandling, J. K., Aïssi, D., Wahl, S., Meduri, E., Morange, P.-E., Gagnon, F., Grallert, H., Waldenberger, M., Peters, A., Erdmann, J., Hengstenberg, C., Cambien, F., Goodall, A. H., Ouwehand, W. H., Schunkert, H., Thompson, J. R., Spector, T. D., Gieger, C., Trégouët, D.-A., Deloukas, P., & Samani, N. J.
Affiliations
  • University of Leicester (GB)
  • University of Bedfordshire (GB)
  • Uppsala University (SE)
  • Inserm (FR)
  • Helmholtz Munich (DE)
  • Wellcome Sanger Institute (GB)
  • University of Toronto (CA)
  • Institute for Integrative and Experimental Genomics (DE)
  • German Centre for Cardiovascular Research (DE)
  • National Health Service (GB)
  • King's College London (GB)
  • Queen Mary University of London (GB)
Corresponding author
Samani, Nilesh J
Venue
The Lancet
Publisher
Elsevier BV
Published
2014-06
Volume
383
Issue
9933
Pages
1990-1998
ISSN
  • 0099-5355 (ISSN-L)
  • 0140-6736
OpenAlex
W2099562966
Cited by
778
References
45
Citations by year
2026: 15 · 2025: 24 · 2024: 39 · 2023: 47 · 2022: 43 · 2021: 53 · 2020: 63 · 2019: 84 · 2018: 73 · 2017: 102 · 2016: 96 · 2015: 86 · 2014: 53
FWCI
46.04
Type
journal article
Language
en
Open access
Locations
  • The Lancet (publishedVersion)
  • PubMed (publishedVersion)
  • Research Portal (King's College London) (submittedVersion)
  • mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich) (submittedVersion)
  • Site cant be reached (submittedVersion)
  • University of Bedfordshire Repository (University of Bedfordshire) (submittedVersion)
  • BCU Open Access Repository (Birmingham City University) (submittedVersion)
Funders
  • European Union (LSHM-CT 2006–037593)
  • Canadian Institutes of Health Research (grant MOP 86466)
  • Heart and Stroke Foundation of Canada (grant T6484)
  • Wellcome Trust (081917/Z/07/Z)
  • NJS collaborate under a Fondation Leducq Grant (12CVD02)
  • Wellcome Trust core grant to the Wellcome Trust Sanger Institute (098051)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Birth, Development, and Health
Keywords
DNA methylation, body mass index, obesity, HIF-3α, epigenetics, CpG sites, adipose tissue, skin, gene expression, genetic variants, epigenetic regulation, whole blood DNA, KORA cohort
MeSH terms
Chromosomes, Human, Pair 15, Chromosomes, Human, Pair 19, Female, Humans, Male, Middle Aged, Obesity, Repressor Proteins, Body Mass Index, DNA Methylation, Polymorphism, Single Nucleotide, Apoptosis Regulatory Proteins, Basic Helix-Loop-Helix Proteins, Genome-Wide Association Study

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