Evidence map›Paper›PMID 22479380›Full record

ArticlePloS one2012

Genetic and non-genetic influences during pregnancy on infant global and site specific DNA methylation: role for folate gene variants and vitamin B12.

Jill A McKay, Alexandra Groom, Catherine Potter, Lisa J Coneyworth, Dianne Ford, John C Mathers, Caroline L Relton

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed, 2 pooled it
6.7field-weighted citation impact, top 2% 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

70 citing papers in PubMed, 2 syntheses or guidelines pooled it, 154 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Article
  6. Article
  7. Article
  8. Folate in autism neurodevelopment.Frontiers in nutrition · 2026
    Review
  9. Review
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Epigenetics and Congenital Heart Diseases.Journal of cardiovascular development and disease · 2022
    Review
  19. Article
  20. Epigenetics of pregnancy: looking beyond the DNA code.Journal of assisted reproduction and genetics · 2022
    Review

10 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

7 authors at 2 institutions in 1 country.

Jill A McKayInstitute for Ageing and Health, Human Nutrition Research Centre, Newcastle University, Newcastle upon Tyne, Tyne and Wear, United Kingdom. jill.mckay@ncl.ac.uk
Alexandra Groom
Catherine Potter
Lisa J Coneyworth
Dianne Ford
John C Mathers
Caroline L Relton
Newcastle University · GBNewcastle College · GB

Funding

Biotechnology and Biological Sciences Research Council BB/F007981/1Biotechnology and Biological Sciences Research Council BB/G007993/1Biotechnology and Biological Sciences Research Council BH081097Medical Research Council G0700718Medical Research Council G0900686
6 · The paper itself

Abstract

Inter-individual variation in patterns of DNA methylation at birth can be explained by the influence of environmental, genetic and stochastic factors. This study investigates the genetic and non-genetic determinants of variation in DNA methylation in human infants. Given its central role in provision of methyl groups for DNA methylation, this study focuses on aspects of folate metabolism. Global (LUMA) and gene specific (IGF2, ZNT5, IGFBP3) DNA methylation were quantified in 430 infants by Pyrosequencing®. Seven polymorphisms in 6 genes (MTHFR, MTRR, FOLH1, CβS, RFC1, SHMT) involved in folate absorption and metabolism were analysed in DNA from both infants and mothers. Red blood cell folate and serum vitamin B(12) concentrations were measured as indices of vitamin status. Relationships between DNA methylation patterns and several covariates viz. sex, gestation length, maternal and infant red cell folate, maternal and infant serum vitamin B(12), maternal age, smoking and genotype were tested. Length of gestation correlated positively with IGF2 methylation (rho = 0.11, p = 0.032) and inversely with ZNT5 methylation (rho = -0.13, p = 0.017). Methylation of the IGFBP3 locus correlated inversely with infant vitamin B(12) concentration (rho = -0.16, p = 0.007), whilst global DNA methylation correlated inversely with maternal vitamin B(12) concentrations (rho = 0.18, p = 0.044). Analysis of common genetic variants in folate pathway genes highlighted several associations including infant MTRR 66G>A genotype with DNA methylation (χ(2) = 8.82, p = 0.003) and maternal MTHFR 677C>T genotype with IGF2 methylation (χ(2) = 2.77, p = 0.006). These data support the hypothesis that both environmental and genetic factors involved in one-carbon metabolism influence DNA methylation in infants. Specifically, the findings highlight the importance of vitamin B(12) status, infant MTRR genotype and maternal MTHFR genotype, all of which may influence the supply of methyl groups for DNA methylation. In addition, gestational length appears to be an important determinant of infant DNA methylation patterns.

Indexed as

DNA MethylationPolymorphism, GeneticAdultCation Transport ProteinsCpG IslandsFemaleFerredoxin-NADP ReductaseFolic AcidGene FrequencyGenotypeGestational AgeHumansInfantInfant, NewbornInsulin-Like Growth Factor Binding Protein 3Insulin-Like Growth Factor IICation Transport ProteinsFerredoxin-NADP ReductaseFolic AcidIGF2 protein, humanIGFBP3 protein, humanInsulin-Like Growth Factor Binding Protein 3Insulin-Like Growth Factor IImethionine synthase reductaseMethylenetetrahydrofolate Reductase (NADPH2)MTHFR protein, humanSLC30A5 protein, humanVitamin B 12

Identifiers

PMID22479380
PMCPMC3316565
OpenAlexW2038081036

What OpenQuestion holds

Textmetadata
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.