Evidence map›Paper›PMID 18563476›Full record

ArticleEuropean child & adolescent psychiatry2009

Molecular genetic contribution to the developmental course of attention-deficit hyperactivity disorder.

Kate Langley, Tom A Fowler, Deborah L Grady, Robert K Moyzis, Peter A Holmans, Marianne B M van den Bree, Michael J Owen, Michael C O'Donovan, Anita Thapar

Abstract read
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Article in European child & adolescent psychiatry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 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

16 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Review
  5. Common and specific genes and peripheral biomarkers in children and adults with attention-deficit/hyperactivity disorder.The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry · 2018
    Review
  6. Review
  7. Review
  8. Article
  9. Attention-deficit/hyperactivity disorder in perspective.European child & adolescent psychiatry · 2010
    Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Review
  15. Article
  16. An Overview on the Genetics of ADHD.Xin li xue bao. Acta psychologica Sinica · 2008
    Article
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

9 authors.

Kate LangleyDepartment of Psychological Medicine, School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK. langleyk@cardiff.ac.uk
Tom A Fowler
Deborah L Grady
Robert K Moyzis
Peter A Holmans
Marianne B M van den Bree
Michael J Owen
Michael C O'Donovan
Anita Thapar

Funding

Medical Research Council G0801418Wellcome Trust
6 · The paper itself

Abstract

objectiveThe developmental trajectory of attention-deficit hyperactivity disorder (ADHD) is variable. Utilizing a longitudinally assessed sample, we investigated the contribution of susceptibility gene variants, previously implicated through pooled or meta-analyses, to the developmental course of Attention-Deficit Hyperactivity Disorder over time.

methods151 children (aged 6-12) who met diagnostic criteria for ADHD were assessed using research diagnostic interviews during childhood and 5 years later in adolescence. Severity was defined as total number of ADHD symptoms at baseline and reassessment. Association with variants at DRD4, DRD5, and the dopamine transporter gene, DAT was analyzed using linear regression.

resultsAs expected, affected individuals showed a decline in ADHD severity over time. The DRD4 48 bp VNTR 7-repeat and DRD5 CA(n) microsatellite marker 148 bp risk alleles were associated with persistent ADHD. Those possessing the DRD4 7 repeat risk allele showed less of a decline in severity at reassessment than those without the risk allele.

conclusionsThose carrying the DRD4 7 risk allele showed greater symptom severity at follow-up and less ADHD reduction over time. These findings support the hypothesis that some susceptibility genes for ADHD also influence its developmental course.

Indexed as

AdolescentAge FactorsAllelesAttention Deficit Disorder with HyperactivityChildDiagnosis, DifferentialDisease ProgressionDopamine Plasma Membrane Transport ProteinsGenetic VariationHumansMolecular BiologyReceptors, Dopamine D4Receptors, Dopamine D5Dopamine Plasma Membrane Transport ProteinsDRD4 protein, humanDRD5 protein, humanReceptors, Dopamine D4Receptors, Dopamine D5SLC6A3 protein, human

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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.