Evidence map›Paper›PMID 19325871›Full record

ArticlePLoS genetics2009

A common variant associated with dyslexia reduces expression of the KIAA0319 gene.

Megan Y Dennis, Silvia Paracchini, Thomas S Scerri, Ludmila Prokunina-Olsson, Julian C Knight, Richard Wade-Martins, Penny Coggill, Stephan Beck, Eric D Green, Anthony P Monaco

Open access · goldAbstract read
In one paragraph

Article in PLoS genetics, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 2 pooled it
9.7field-weighted citation impact, top 2% 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

60 citing papers in PubMed, 2 syntheses or guidelines pooled it, 106 citations in OpenAlex.

  1. Association betweenJournal of genetics · 2019
    Pooled it
  2. Pooled it
  3. Trial
  4. Article
  5. Article
  6. FAM91A1-TBC1D23 complex structure reveals human genetic variations susceptible for PCH.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  7. Article
  8. Article
  9. Article
  10. Review
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  12. Toward Robust Functional Neuroimaging Genetics of Cognition.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2019
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Neural Noise Hypothesis of Developmental Dyslexia.Trends in cognitive sciences · 2017
    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

10 authors at 6 institutions in 2 countries.

Megan Y DennisWellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK.
Silvia Paracchini
Thomas S Scerri
Ludmila Prokunina-Olsson
Julian C Knight
Richard Wade-Martins
Penny Coggill
Stephan Beck
Eric D Green
Anthony P Monaco
Centre for Human Genetics · GBUniversity of Oxford · GBNational Cancer Institute · USNational Institutes of Health · USUniversity College London · GBWellcome Sanger Institute · GB

Funding

Structural and Functional Analysis of Mammalian ChromosomesZIAHG000060 · NHGRI · NATIONAL HUMAN GENOME RESEARCH INSTITUTE · PI GREEN, ERIC · 2009 to 2010
$4.3M
Intramural NIH HHSMedical Research Council G0800523Wellcome Trust 074318
6 · The paper itself

Abstract

Numerous genetic association studies have implicated the KIAA0319 gene on human chromosome 6p22 in dyslexia susceptibility. The causative variant(s) remains unknown but may modulate gene expression, given that (1) a dyslexia-associated haplotype has been implicated in the reduced expression of KIAA0319, and (2) the strongest association has been found for the region spanning exon 1 of KIAA0319. Here, we test the hypothesis that variant(s) responsible for reduced KIAA0319 expression resides on the risk haplotype close to the gene's transcription start site. We identified seven single-nucleotide polymorphisms on the risk haplotype immediately upstream of KIAA0319 and determined that three of these are strongly associated with multiple reading-related traits. Using luciferase-expressing constructs containing the KIAA0319 upstream region, we characterized the minimal promoter and additional putative transcriptional regulator regions. This revealed that the minor allele of rs9461045, which shows the strongest association with dyslexia in our sample (max p-value = 0.0001), confers reduced luciferase expression in both neuronal and non-neuronal cell lines. Additionally, we found that the presence of this rs9461045 dyslexia-associated allele creates a nuclear protein-binding site, likely for the transcriptional silencer OCT-1. Knocking down OCT-1 expression in the neuronal cell line SHSY5Y using an siRNA restores KIAA0319 expression from the risk haplotype to nearly that seen from the non-risk haplotype. Our study thus pinpoints a common variant as altering the function of a dyslexia candidate gene and provides an illustrative example of the strategic approach needed to dissect the molecular basis of complex genetic traits.

Indexed as

Gene Expression RegulationPolymorphism, Single NucleotideBinding SitesCell LineDown-RegulationDyslexiaHaplotypesHumansNerve Tissue ProteinsNeuronsOctamer Transcription Factor-1Promoter Regions, GeneticKIAA0319 protein, humanNerve Tissue ProteinsOctamer Transcription Factor-1

Identifiers

PMID19325871
PMCPMC2653637
OpenAlexW2103084877

What OpenQuestion holds

Textmetadata
LicenceCC0
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.