Evidence map›Paper›PMID 26304033›Full record

ArticleJournal of child psychology and psychiatry, and allied disciplines2016

Methylomic analysis of salivary DNA in childhood ADHD identifies altered DNA methylation in VIPR2.

Beth Wilmot, Rebecca Fry, Lisa Smeester, Erica D Musser, Jonathan Mill, Joel T Nigg

Open access · greenAbstract read
In one paragraph

Article in Journal of child psychology and psychiatry, and allied disciplines, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed, 4 pooled it
5.0field-weighted citation impact, top 4% 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

62 citing papers in PubMed, 4 syntheses or guidelines pooled it, 112 citations in OpenAlex.

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  16. Epigenome-wide Association Study for Tic Disorders in Children: A Preliminary Study in Korean Population.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2024
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2 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

6 authors at 4 institutions in 2 countries.

Beth WilmotDivision of Psychology, Oregon Health & Science University, Portland, OR, USA.
Rebecca FryDepartment of Psychiatry, University of North Carolina, Chapel Hill, NC, USA.
Lisa SmeesterDepartment of Psychiatry, University of North Carolina, Chapel Hill, NC, USA.
Erica D MusserDepartment of Psychology, Florida International University, Miami, FL, USA.
Jonathan MillUniversity of Exeter Medical School, Exeter University, Exeter, UK.
Joel T NiggDivision of Psychology, Oregon Health & Science University, Portland, OR, USA.
Oregon Health & Science University · USUniversity of North Carolina at Chapel Hill · USFlorida International University · USKing's College London · GB

Funding

Brain trajectories in ADHDR01MH115357 · NIMH · OREGON HEALTH & SCIENCE UNIVERSITY · PI FAIR, DAMIEN A, NIGG, JOEL T · 2017 to 2021
$3.8M
ADHD biotypes using genetic and imaging approachesR01MH099064 · NIMH · OREGON HEALTH & SCIENCE UNIVERSITY · PI NIGG, JOEL T · 2013 to 2017
$3.2M
NIMH NIH HHS R01 MH099064NIMH NIH HHS R01 MH115357
6 · The paper itself

Abstract

backgroundPeripheral epigenetic marks hold promise for understanding psychiatric illness and may represent fingerprints of gene-environment interactions. We conducted an initial examination of CpG methylation variation in children with or without attention-deficit/hyperactivity disorder (ADHD).

methodsChildren age 7-12 were recruited, screened, evaluated and assigned to ADHD or non-ADHD groups by defined research criteria. Two independent age-matched samples were examined, a discovery set (n = 92, all boys, half control, half ADHD) and a confirmation set (n = 20, half ADHD, all boys). 5-methylcytosine levels were quantified in salivary DNA using the Illumina 450 K HumanMethylation array. Genes for which multiple probes were nominally significant and had a beta difference of at least 2% were evaluated for biological relevance and prioritized for confirmation and sequence validation. Gene pathways were explored and described.

resultsTwo genes met the criteria for confirmation testing, VIPR2 and MYT1L; both had multiple probes meeting cutoffs and strong biological relevance. Probes on VIPR2 passed FDR correction in the confirmation set and were confirmed through bisulfite sequencing. Enrichment analysis suggested involvement of gene sets or pathways related to inflammatory processes and modulation of monoamine and cholinergic neurotransmission.

conclusionsAlthough it is unknown to what extent CpG methylation seen in peripheral tissue reflect transcriptomic changes in the brain, these initial results indicate that peripheral DNA methylation markers in ADHD may be promising and suggest targeted hypotheses for future study in larger samples.

Indexed as

Attention Deficit Disorder with HyperactivityBiomarkersChildCpG IslandsDNA MethylationHumansMaleNerve Tissue ProteinsPilot ProjectsReceptors, Vasoactive Intestinal Peptide, Type IISalivaTranscription FactorsBiomarkersMYT1L protein, humanNerve Tissue ProteinsReceptors, Vasoactive Intestinal Peptide, Type IITranscription FactorsVIPR2 protein, humanADHDepigeneticmethylation

Identifiers

PMID26304033
PMCPMC4724325
OpenAlexW2110589610

What OpenQuestion holds

Textmetadata
LicenceTDM
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.