Evidence map›Paper›PMID 19362708›Full record

ArticleBiological psychiatry2009

Association of attention-deficit/hyperactivity disorder with a candidate region for reading disabilities on chromosome 6p.

Jillian M Couto, Lissette Gomez, Karen Wigg, Abel Ickowicz, Tejaswee Pathare, Molly Malone, James L Kennedy, Russell Schachar, Cathy L Barr

Open access · greenAbstract read
In one paragraph

Article in Biological psychiatry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
3.8field-weighted citation impact, top 7% 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

30 citing papers in PubMed, 54 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Executive function in XXY: Comparison of performance-based measures and rating scales.American journal of medical genetics. Part C, Seminars in medical genetics · 2020
    Article
  5. Effect of READ1 on latent profiles of reading disorder and comorbid attention and language impairment subtypes.Child neuropsychology : a journal on normal and abnormal development in childhood and adolescence · 2020
    Article
  6. Review
  7. Article
  8. Article
  9. Attention-Deficit/Hyperactivity Disorder: A Historical Neuropsychological Perspective.Journal of the International Neuropsychological Society : JINS · 2017
    Review
  10. Article
  11. Rapid automatized naming (RAN) in children with ADHD: An ex-Gaussian analysis.Child neuropsychology : a journal on normal and abnormal development in childhood and adolescence · 2017
    Article
  12. Article
  13. Article
  14. Article
  15. The DCDC2/intron 2 deletion and white matter disorganization: focus on developmental dyslexia.Cortex; a journal devoted to the study of the nervous system and behavior · 2014
    Article
  16. Article
  17. Novel QTL at chromosome 6p22 for alcohol consumption: Implications for the genetic liability of alcohol use disorders.American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics · 2014
    Article
  18. Inattention, hyperactivity, and emergent literacy: different facets of inattention relate uniquely to preschoolers' reading-related skills.Journal of clinical child and adolescent psychology : the official journal for the Society of Clinical Child and Adolescent Psychology, American Psychological Association, Division 53 · 2013
    Article
  19. Review
  20. 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 at 4 institutions in 1 country.

Jillian M CoutoGenetics and Development Division, Toronto Western Research Institute, Toronto Western Hospital, University Health Network, Toronto, Canada.
Lissette Gomez
Karen Wigg
Abel Ickowicz
Tejaswee Pathare
Molly Malone
James L Kennedy
Russell Schachar
Cathy L Barr
Hospital for Sick Children · CAUniversity Health Network · CAToronto Western Hospital · CAUniversity of Toronto · CA

Funding

CIHR 36358-2
6 · The paper itself

Abstract

backgroundReading disabilities (RD) and attention-deficit hyperactivity/disorder (ADHD) are two common childhood disorders that co-occur by chance more often than expected. Twin studies and overlapping genetic linkage findings indicate that shared genetic factors partially contribute to this comorbidity. Linkage of ADHD to 6p, an identified RD candidate locus, has previously been reported, suggesting the possibility of a pleiotropic gene at this locus. RD has been previously associated with five genes in the region, particularly DCDC2 and KIAA0319.

methodsTo test whether these genes also contribute to ADHD, we investigated markers previously associated with RD for association with ADHD and ADHD symptoms in a sample of families with ADHD (n = 264). Markers were located in two subregions, VMP/DCDC2 and KIAA0319/TTRAP.

resultsAcross all analyses conducted, strong evidence for association was observed in the VMP/DCDC2 region. Association was equally strong with symptoms of both inattention and hyperactivity/impulsivity, suggesting that this locus contributes to both symptom dimensions. Markers were also tested for association with measures of reading skills (word identification, decoding); however, there was virtually no overlap in the markers associated with ADHD and those associated with reading skills in this sample.

conclusionsOverall this study supports a previous linkage study of ADHD indicating a risk gene for ADHD on 6p and points to VMP or DCDC2 as the most likely candidates.

Indexed as

Genome-Wide Association StudyAdolescentAttentionAttention Deficit Disorder with HyperactivityChildChromosomes, Human, Pair 6DNA-Binding ProteinsDyslexiaFemaleGenetic MarkersGenotypeHumansImpulsive BehaviorMaleMembrane ProteinsMicrotubule-Associated ProteinsDCDC2 protein, humanDNA-Binding ProteinsGenetic MarkersKIAA0319 protein, humanMembrane ProteinsMicrotubule-Associated ProteinsNerve Tissue ProteinsNRSN1 protein, humanNuclear ProteinsPhosphoric Diester HydrolasesTDP2 protein, humanTranscription Factors

Identifiers

PMID19362708
PMCPMC5750043
OpenAlexW2140406870

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.