Evidence map›Paper›PMID 17504247›Full record

ArticleGenes, brain, and behavior2008

Association study of the nicotinic acetylcholine receptor alpha4 subunit gene, CHRNA4, in attention-deficit hyperactivity disorder.

J Lee, N Laurin, J Crosbie, A Ickowicz, T Pathare, M Malone, J L Kennedy, R Tannock, R Schachar, C L Barr

Open access · bronzeAbstract read
In one paragraph

Article in Genes, brain, and behavior, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 16% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 33 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. A Potential Role for Neuroinflammation in ADHD.Advances in experimental medicine and biology · 2023
    Review
  5. Review
  6. Attention-deficit/hyperactive disorder updates.Frontiers in molecular neuroscience · 2022
    Review
  7. Article
  8. Review
  9. Nicotinic α4β2 Cholinergic Receptor Influences on Dorsolateral Prefrontal Cortical Neuronal Firing during a Working Memory Task.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2017
    Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Molecular genetics of attention deficit hyperactivity disorder.The Psychiatric clinics of North America · 2010
    Review
  15. Article
  16. Review
  17. Article
  18. Article
  19. ADHD and smoking: from genes to brain to behavior.Annals of the New York Academy of Sciences · 2008
    Review
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

10 authors at 3 institutions in 2 countries.

J LeeDivision of Genetics and Development, Toronto Western Research Institute, University Health Network, Toronto, ON, Canada.
N Laurin
J Crosbie
A Ickowicz
T Pathare
M Malone
J L Kennedy
R Tannock
R Schachar
C L Barr
Hospital for Sick Children · CAUniversity Health Network · CACentre for Addiction and Mental Health · CA

Funding

CIHR 14336-1CIHR 14336-2
6 · The paper itself

Abstract

Attention-deficit hyperactivity disorder (ADHD) is a common childhood-onset psychiatric condition with a strong genetic component. Evidence from pharmacological, clinical and animal studies has suggested that the nicotinic system could be involved in the disorder. Previous studies have implicated the nicotinic acetylcholine receptor alpha4 subunit gene, CHRNA4, in ADHD. Particularly, a polymorphism in the exon 2-intron 2 junction of CHRNA4 has been associated with severe inattention defined by latent class analysis. In the current study, we used the transmission disequilibrium test (TDT) to investigate four polymorphisms encompassing this region of CHRNA4 for association with ADHD in a sample of 264 nuclear families from Toronto. No significant evidence of biased transmission was observed for any of the marker alleles for ADHD defined as a categorical trait (all subtypes included), although one haplotype showed marginal evidence of under-transmission. No association was found with the ADHD predominantly inattentive subtype or with symptom dimension scores of inattention. On the contrary, nominally significant evidence of association of individual markers was obtained for the ADHD combined subtype and with teacher-rated hyperactivity-impulsivity scores, with the same haplotype being under-transmitted. Based on our results and others, CHRNA4 may be involved in ADHD; however, its role in ADHD symptomatology remains to be clarified.

Indexed as

AdolescentAllelesAttention Deficit Disorder with HyperactivityChildDiagnostic and Statistical Manual of Mental DisordersFemaleGenetic MarkersGenetic Predisposition to DiseaseHaplotypesHumansIntronsLinkage DisequilibriumMaleMemory, Short-TermPersonality AssessmentReceptors, NicotinicGenetic MarkersReceptors, Nicotinic

Identifiers

PMID17504247
PMCPMC4833496
OpenAlexW2000520459

What OpenQuestion holds

Textmetadata
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.