Evidence map›Paper›PMID 30923918›Full record

SynthesisJournal of neural transmission (Vienna, Austria : 1996)2019

Association study and a systematic meta-analysis of the VNTR polymorphism in the 3'-UTR of dopamine transporter gene and attention-deficit hyperactivity disorder.

Edna Grünblatt, Anna Maria Werling, Alexander Roth, Marcel Romanos, Susanne Walitza

Open access · hybridAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Journal of neural transmission (Vienna, Austria : 1996), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.5field-weighted citation impact, top 12% 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

21 citing papers in PubMed, 37 citations in OpenAlex.

  1. Article
  2. Review
  3. Selective Visual Attention in ADHD: A Narrative Review.Current neurology and neuroscience reports · 2025
    Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. A systematic meta-review of systematic reviews on attention deficit hyperactivity disorder.European psychiatry : the journal of the Association of European Psychiatrists · 2023
    Review
  9. Article
  10. Article
  11. A Potential Role for Neuroinflammation in ADHD.Advances in experimental medicine and biology · 2023
    Review
  12. Dysregulated proteostasis network in neuronal diseases.Frontiers in cell and developmental biology · 2023
    Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. Variable number tandem repeats - Their emerging role in sickness and health.Experimental biology and medicine (Maywood, N.J.) · 2021
    Review
  18. Article
  19. ADHD: Reviewing the Causes and Evaluating Solutions.Journal of personalized medicine · 2021
    Review
  20. Observational
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

5 authors at 3 institutions in 3 countries.

Edna GrünblattDepartment of Child and Adolescent Psychiatry and Psychotherapy, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland. edna.gruenblatt@kjpd.uzh.ch.ORCID 0000-0001-8505-7265
Anna Maria WerlingDepartment of Child and Adolescent Psychiatry and Psychotherapy, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland.
Alexander RothDepartment of Child and Adolescent Psychiatry and Psychotherapy, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland.
Marcel RomanosDepartment of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Center of Mental Health, University Hospital of Wuerzburg, Würzburg, Germany.
Susanne WalitzaDepartment of Child and Adolescent Psychiatry and Psychotherapy, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, Switzerland.
University of Zurich · CHAmerican Academy of Child and Adolescent Psychiatry · USUniversitätsklinikum Würzburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Attention-deficit hyperactivity disorder (ADHD) has been postulated to associate with dopaminergic dysfunction, including the dopamine transporter (DAT1). Several meta-analyses showed small but significant association between the 10-repeat allele in the DAT1 gene in 3'-untranslated region variant number tandem repeat polymorphism and child and adolescent ADHD, whereas in adult ADHD the 9-repeat allele was suggested to confer as risk allele. Interestingly, recent evidence indicated that the long-allele variants (10 repeats and longer) might confer to lower expression of the transporter in comparison to the short-allele. Therefore, we assessed here the association in samples consisting of families with child and adolescent ADHD as well as a case-control sample, using either the 10- versus 9-repeat or the long- versus short-allele approach. Following, we conducted a systematic review and meta-analysis, including family and case-control studies, using the two aforementioned approaches as well as stratifying to age and ethnicity. The first approach (10-repeat) resulted in nominal significant association in child and adolescent ADHD (OR 1.1050 p = 0.0128), that became significant stratifying to European population (OR 1.1301 p = 0.0085). The second approach (long-allele) resulted in significant association with the whole ADHD population (OR 1.1046 p = 0.0048), followed by significant association for child and adolescent ADHD (OR 1.1602 p = 0.0006) and in Caucasian and in European child and adolescent ADHD (OR 1.1310 p = 0.0114; OR 1.1661 p = 0.0061; respectively). We were not able to confirm the association reported in adults using both approaches. In conclusion, we found further indication for a possible DAT1 gene involvement; however, further studies should be conducted with stringent phenotyping to reduce heterogeneity, a limitation observed in most included studies.

Indexed as

3' Untranslated RegionsAdolescentAttention Deficit Disorder with HyperactivityChildDopamine Plasma Membrane Transport ProteinsFemaleGenetic Predisposition to DiseaseGenome-Wide Association StudyHumansMaleMinisatellite RepeatsPolymorphism, Genetic3' Untranslated RegionsDopamine Plasma Membrane Transport ProteinsSLC6A3 protein, humanADHDAttention-deficit hyperactivity disorderDAT1Dopamine transporterMeta-analysisSLC6A3

Identifiers

PMID30923918
PMCPMC6456487
OpenAlexW2932105875

What OpenQuestion holds

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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.