Evidence map›Paper›PMID 22691691›Full record

ArticleBehavioral and brain functions : BBF2012

A genetic association study of DNA methylation levels in the DRD4 gene region finds associations with nearby SNPs.

Sophia J Docherty, Oliver Sp Davis, Claire Ma Haworth, Robert Plomin, Ursula D'Souza, Jonathan Mill

Open access · goldAbstract read
In one paragraph

Article in Behavioral and brain functions : BBF, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 17% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. The Dopamine Receptor D4 Gene (Frontiers in behavioral neuroscience · 2018
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  10. Review
  11. PANDAS and comorbid Kleine-Levin syndrome.Journal of child and adolescent psychopharmacology · 2015
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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 2 institutions in 1 country.

Sophia J DochertyKing's College London, MRC Social, Genetic and Developmental Psychiatry Centre,, Institute of Psychiatry, De Crespigny Park, Denmark Hill, London, SE5 8AF, UK. sophia.docherty@iop.kcl.ac.uk
Oliver Sp Davis
Claire Ma Haworth
Robert Plomin
Ursula D'Souza
Jonathan Mill
King's College London · GBPsychiatry Research Trust · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDopamine receptor D4(DRD4) polymorphisms have been associated with a number of psychiatric disorders, but little is known about the mechanism of these associations. DNA methylation is linked to the regulation of gene expression and plays a vital role in normal cellular function, with abnormal DNA methylation patterns implicated in a range of disorders. Recent evidence suggests DNA methylation can be influenced by cis-acting DNA sequence variation, that is, DNA sequence variation located nearby on the same chromosome.

methodsTo investigate the potential influence of cis-acting genetic elements within DRD4, we analysed DRD4 promoter DNA methylation levels in the transformed lymphoblastoid cell-line DNA of 89 individuals (from 30 family-trios). Five SNPs located +/- 10kb of the promoter region were interrogated for associations with DNA methylation levels.

resultsFour significant SNP associations were found with DNA methylation (rs3758653, rs752306, rs11246228 and rs936465). The associations of rs3758653 and rs936465 with DNA methylation were tested and nominally replicated (p-value < 0.05) in post-mortem brain tissue from an independent sample (N = 18). Interestingly, the DNA methylation patterns observed in post-mortem brain tissue were similar to those observed in transformed lymphoblastoid cell line DNA.

conclusionsThe link reported between DNA sequence and DNA methylation offers a possible functional role to seemingly non-functional SNP associations. DRD4 has been implicated in several psychiatric disease phenotypes and our results shed light upon the possible mode of action of SNP associations in this region.

Indexed as

DNA MethylationPolymorphism, Single NucleotideAlzheimer DiseaseFemaleGene ExpressionGenetic Association StudiesGenotypeHumansMalePromoter Regions, GeneticReceptors, Dopamine D4DRD4 protein, humanReceptors, Dopamine D4

Identifiers

PMID22691691
PMCPMC3538530
OpenAlexW2128752324

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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.