Evidence map›Paper›PMID 25325234›Full record

ArticleEnvironmental health perspectives2015

Prenatal exposure to maternal cigarette smoking and DNA methylation: epigenome-wide association in a discovery sample of adolescents and replication in an independent cohort at birth through 17 years of age.

Ken W K Lee, Rebecca Richmond, Pingzhao Hu, Leon French, Jean Shin, Celine Bourdon, Eva Reischl, Melanie Waldenberger, Sonja Zeilinger, Tom Gaunt and 9 more

Open access · diamondAbstract read
In one paragraph

Article in Environmental health perspectives, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 110 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
110citing papers in PubMed, 5 pooled it
10.0field-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

110 citing papers in PubMed, 5 syntheses or guidelines pooled it, 193 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Vitamin C Prevents Offspring DNA Methylation Changes Associated with Maternal Smoking in Pregnancy.American journal of respiratory and critical care medicine · 2017
    Trial
  7. Article
  8. Article
  9. Article
  10. Review
  11. The aryl hydrocarbon receptor: a new frontier in male reproductive system.Reproductive biology and endocrinology : RB&E · 2025
    Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Early-life exposure to cigarette smoke primes lung function and DNA methylation changes atAmerican journal of physiology. Lung cellular and molecular physiology · 2023
    Article
  20. Review

50 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

19 authors at 6 institutions in 4 countries.

Ken W K LeeThe Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada.
Rebecca Richmond
Pingzhao Hu
Leon French
Jean Shin
Celine Bourdon
Eva Reischl
Melanie Waldenberger
Sonja Zeilinger
Tom Gaunt
Wendy McArdle
Susan Ring
Geoff Woodward
Luigi Bouchard
Daniel Gaudet
George Davey Smith
Caroline Relton
Tomas Paus
Zdenka Pausova
University of Toronto · CAUniversity of Bristol · GBHelmholtz Zentrum München · DENorwegian University of Science and Technology · NOUniversité de Montréal · CAUniversité de Sherbrooke · CA

Funding

CIHRMedical Research Council MC_PC_15018Medical Research Council MC_UU_12013/1Medical Research Council MC_UU_12013/2Medical Research Council MC_UU_12013/3Medical Research Council MC_UU_12013/8Wellcome Trust 092731Wellcome Trust 102215
6 · The paper itself

Abstract

backgroundPrenatal exposure to maternal cigarette smoking (prenatal smoke exposure) had been associated with altered DNA methylation (DNAm) at birth.

objectiveWe examined whether such alterations are present from birth through adolescence.

methodsWe used the Infinium HumanMethylation450K BeadChip to search across 473,395 CpGs for differential DNAm associated with prenatal smoke exposure during adolescence in a discovery cohort (n = 132) and at birth, during childhood, and during adolescence in a replication cohort (n = 447).

resultsIn the discovery cohort, we found five CpGs in MYO1G (top-ranking CpG: cg12803068, p = 3.3 × 10-11) and CNTNAP2 (cg25949550, p = 4.0 × 10-9) to be differentially methylated between exposed and nonexposed individuals during adolescence. The CpGs in MYO1G and CNTNAP2 were associated, respectively, with higher and lower DNAm in exposed versus nonexposed adolescents. The same CpGs were differentially methylated at birth, during childhood, and during adolescence in the replication cohort. In both cohorts and at all developmental time points, the differential DNAm was in the same direction and of a similar magnitude, and was not altered appreciably by adjustment for current smoking by the participants or their parents. In addition, four of the five EWAS (epigenome-wide association study)-significant CpGs in the adolescent discovery cohort were also among the top sites of differential methylation in a previous birth cohort, and differential methylation of CpGs in CYP1A1, AHRR, and GFI1 observed in that study was also evident in our discovery cohort.

conclusionsOur findings suggest that modifications of DNAm associated with prenatal maternal smoking may persist in exposed offspring for many years-at least until adolescence.

Indexed as

DNA MethylationEpigenesis, GeneticMaternal ExposureAdolescentAdultChildCohort StudiesEnglandFemaleGenome-Wide Association StudyHumansInfant, NewbornMalePregnancyPrenatal Exposure Delayed EffectsQuebec

Identifiers

PMID25325234
PMCPMC4314251
OpenAlexW1972219651

What OpenQuestion holds

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Registered trials

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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.