Evidence map›Paper›PMID 22800725›Full record

ArticleGenome research2012

Neonatal DNA methylation profile in human twins is specified by a complex interplay between intrauterine environmental and genetic factors, subject to tissue-specific influence.

Lavinia Gordon, Jihoon E Joo, Joseph E Powell, Miina Ollikainen, Boris Novakovic, Xin Li, Roberta Andronikos, Mark N Cruickshank, Karen N Conneely, Alicia K Smith and 5 more

Open access · bronzeAbstract readTwin Study
In one paragraph

Article in Genome research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 127 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
127citing papers in PubMed, 4 pooled it
–field-weighted citation impact
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

127 citing papers in PubMed, 4 syntheses or guidelines pooled it, 279 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Epigenetics and human obesity.International journal of obesity (2005) · 2015
    Pooled it
  5. Trial
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  12. International journal of molecular sciences · 2025
    Article
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  17. Harnessing male germline epigenomics for the genetic improvement in cattle.Journal of animal science and biotechnology · 2023
    Review
  18. Article
  19. Article
  20. Article

67 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

15 authors at 6 institutions in 3 countries.

Lavinia GordonBioinformatics Unit, Murdoch Childrens Research Institute, Parkville, Victoria 3052, Australia.
Jihoon E Joo
Joseph E Powell
Miina Ollikainen
Boris Novakovic
Xin Li
Roberta Andronikos
Mark N Cruickshank
Karen N Conneely
Alicia K Smith
Reid S Alisch
Ruth Morley
Peter M Visscher
Jeffrey M Craig
Richard Saffery
The University of Melbourne · AUEmory University · USThe University of Queensland · AUMurdoch Children's Research Institute · AUUniversity of Helsinki · FIUniversity of Wisconsin–Madison · US

Funding

Genetic & Environmental Risk Factors that Contribute to Childhood PsychopathologyK01MH085806 · NIMH · EMORY UNIVERSITY · PI SMITH, ALICIA K · 2010 to 2013
$522k
NIMH NIH HHS K01 MH085806
6 · The paper itself

Abstract

Comparison between groups of monozygotic (MZ) and dizygotic (DZ) twins enables an estimation of the relative contribution of genetic and shared and nonshared environmental factors to phenotypic variability. Using DNA methylation profiling of ∼20,000 CpG sites as a phenotype, we have examined discordance levels in three neonatal tissues from 22 MZ and 12 DZ twin pairs. MZ twins exhibit a wide range of within-pair differences at birth, but show discordance levels generally lower than DZ pairs. Within-pair methylation discordance was lowest in CpG islands in all twins and increased as a function of distance from islands. Variance component decomposition analysis of DNA methylation in MZ and DZ pairs revealed a low mean heritability across all tissues, although a wide range of heritabilities was detected for specific genomic CpG sites. The largest component of variation was attributed to the combined effects of nonshared intrauterine environment and stochastic factors. Regression analysis of methylation on birth weight revealed a general association between methylation of genes involved in metabolism and biosynthesis, providing further support for epigenetic change in the previously described link between low birth weight and increasing risk for cardiovascular, metabolic, and other complex diseases. Finally, comparison of our data with that of several older twins revealed little evidence for genome-wide epigenetic drift with increasing age. This is the first study to analyze DNA methylation on a genome scale in twins at birth, further highlighting the importance of the intrauterine environment on shaping the neonatal epigenome.

Indexed as

DNA MethylationEpigenesis, GeneticGenome, HumanCells, CulturedCpG IslandsEpigenomicsFemaleFetal DevelopmentFetal Growth RetardationGenetic DriftGestational AgeHumansHuman Umbilical Vein Endothelial CellsInfant, Low Birth WeightInfant, NewbornInheritance Patterns

Identifiers

PMID22800725
PMCPMC3409253
OpenAlexW2143086385

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.