Evidence map›Paper›PMID 25650246›Full record

ArticleGenome research2015

Methylomic trajectories across human fetal brain development.

Helen Spiers, Eilis Hannon, Leonard C Schalkwyk, Rebecca Smith, Chloe C Y Wong, Michael C O'Donovan, Nicholas J Bray, Jonathan Mill

Open access · bronzeAbstract read
In one paragraph

Article in Genome research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 190 papers, 13 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
190citing papers in PubMed, 13 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

190 citing papers in PubMed, 13 syntheses or guidelines pooled it, 309 citations in OpenAlex.

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  16. Global epigenetic immunohistochemical markers reveal developmental connections of distinct cell types during fetal development.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
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130 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 4 institutions in 1 country.

Helen SpiersInstitute of Psychiatry, Psychology & Neuroscience, King's College London, London SE5 8AF, United Kingdom;
Eilis HannonUniversity of Exeter Medical School, University of Exeter, Exeter EX2 5DW, United Kingdom;
Leonard C SchalkwykSchool of Biological Sciences, University of Essex, Colchester CO4 3SQ, United Kingdom;
Rebecca SmithInstitute of Psychiatry, Psychology & Neuroscience, King's College London, London SE5 8AF, United Kingdom;
Chloe C Y WongInstitute of Psychiatry, Psychology & Neuroscience, King's College London, London SE5 8AF, United Kingdom;
Michael C O'DonovanMRC Centre for Neuropsychiatric Genetics and Genomics, Cardiff University School of Medicine, Cardiff CF24 4HQ, United Kingdom.
Nicholas J BrayInstitute of Psychiatry, Psychology & Neuroscience, King's College London, London SE5 8AF, United Kingdom;
Jonathan MillInstitute of Psychiatry, Psychology & Neuroscience, King's College London, London SE5 8AF, United Kingdom; University of Exeter Medical School, University of Exeter, Exeter EX2 5DW, United Kingdom; j.mill@exeter.ac.uk.
King's College London · GBCardiff University · GBUniversity of Essex · GBUniversity of Exeter · GB

Funding

Medical Research Council G0700089Medical Research Council G0800509Medical Research Council MC_PC_15004Medical Research Council MR/K013807/1Medical Research Council MR/L010305/1Medical Research Council MR/L010674/1Wellcome TrustWellcome Trust GR082557
6 · The paper itself

Abstract

Epigenetic processes play a key role in orchestrating transcriptional regulation during development. The importance of DNA methylation in fetal brain development is highlighted by the dynamic expression of de novo DNA methyltransferases during the perinatal period and neurodevelopmental deficits associated with mutations in the methyl-CpG binding protein 2 (MECP2) gene. However, our knowledge about the temporal changes to the epigenome during fetal brain development has, to date, been limited. We quantified genome-wide patterns of DNA methylation at ∼ 400,000 sites in 179 human fetal brain samples (100 male, 79 female) spanning 23 to 184 d post-conception. We identified highly significant changes in DNA methylation across fetal brain development at >7% of sites, with an enrichment of loci becoming hypomethylated with fetal age. Sites associated with developmental changes in DNA methylation during fetal brain development were significantly underrepresented in promoter regulatory regions but significantly overrepresented in regions flanking CpG islands (shores and shelves) and gene bodies. Highly significant differences in DNA methylation were observed between males and females at a number of autosomal sites, with a small number of regions showing sex-specific DNA methylation trajectories across brain development. Weighted gene comethylation network analysis (WGCNA) revealed discrete modules of comethylated loci associated with fetal age that are significantly enriched for genes involved in neurodevelopmental processes. This is, to our knowledge, the most extensive study of DNA methylation across human fetal brain development to date, confirming the prenatal period as a time of considerable epigenomic plasticity.

Indexed as

DNA MethylationEpigenesis, GeneticEpigenomicsAutistic DisorderBase CompositionBrainCluster AnalysisCpG IslandsFemaleFetal DevelopmentGene Expression ProfilingGenome-Wide Association StudyHumansMaleOrganogenesisPregnancy

Identifiers

PMID25650246
PMCPMC4352878
OpenAlexW2106976893

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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.