Evidence map›Paper›PMID 19774229›Full record

ArticlePloS one2009

The relationship of DNA methylation with age, gender and genotype in twins and healthy controls.

Marco P Boks, Eske M Derks, Daniel J Weisenberger, Erik Strengman, Esther Janson, Iris E Sommer, René S Kahn, Roel A Ophoff

Open access · goldAbstract readTwin Study
In one paragraph

Article in PloS one, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 212 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
212citing papers in PubMed, 5 pooled it
9.3field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

212 citing papers in PubMed, 5 syntheses or guidelines pooled it, 373 citations in OpenAlex.

  1. Pooled it
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  6. Review
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  15. Epigenetic age acceleration in idiopathic pulmonary fibrosis revealed by DNA methylation clocks.American journal of physiology. Lung cellular and molecular physiology · 2025
    Article
  16. Article
  17. The androgen clock is an epigenetic predictor of long-term male hormone exposure.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  18. Review
  19. Article
  20. Article

152 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 2 countries.

Marco P BoksRudolf Magnus Institute of Neuroscience, Department of Psychiatry, University Medical Center Utrecht, Utrecht, The Netherlands.
Eske M Derks
Daniel J Weisenberger
Erik Strengman
Esther Janson
Iris E Sommer
René S Kahn
Roel A Ophoff
University Medical Center Utrecht · NLUniversity of Southern California · US

Funding

High-density Genome-wide Association Study SchizophreniaR01MH078075 · NIMH · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI OPHOFF, ROEL A · 2006 to 2009
$3.7M
NIMH NIH HHS R01 MH078075
6 · The paper itself

Abstract

Cytosine-5 methylation within CpG dinucleotides is a potentially important mechanism of epigenetic influence on human traits and disease. In addition to influences of age and gender, genetic control of DNA methylation levels has recently been described. We used whole blood genomic DNA in a twin set (23 MZ twin-pairs and 23 DZ twin-pairs, N = 92) as well as healthy controls (N = 96) to investigate heritability and relationship with age and gender of selected DNA methylation profiles using readily commercially available GoldenGate bead array technology. Despite the inability to detect meaningful methylation differences in the majority of CpG loci due to tissue type and locus selection issues, we found replicable significant associations of DNA methylation with age and gender. We identified associations of genetically heritable single nucleotide polymorphisms with large differences in DNA methylation levels near the polymorphism (cis effects) as well as associations with much smaller differences in DNA methylation levels elsewhere in the human genome (trans effects). Our results demonstrate the feasibility of array-based approaches in studies of DNA methylation and highlight the vast differences between individual loci. The identification of CpG loci of which DNA methylation levels are under genetic control or are related to age or gender will facilitate further studies into the role of DNA methylation and disease.

Indexed as

Age FactorsDNA MethylationTwinsCase-Control StudiesFemaleGenotypeHumansLinkage DisequilibriumMale

Identifiers

PMID19774229
PMCPMC2747671
OpenAlexW2073123191

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.