Association analysis of dyslexia candidate genes in a Dutch longitudinal sample

Amaia Carrion-Castillo, Ben Maassen, Barbara Franke, Angelien Heister, Marlies Naber, Aryan van der Leij, Clyde Francks, Simon E Fisher

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    13 Citations (Scopus)

    Abstract

    Dyslexia is a common specific learning disability with a substantive genetic component. Several candidate genes have been proposed to be implicated in dyslexia susceptibility, such as DYX1C1, ROBO1, KIAA0319, and DCDC2. Associations with variants in these genes have also been reported with a variety of psychometric measures tapping into the underlying processes that might be impaired in dyslexic people. In this study, we first conducted a literature review to select single nucleotide polymorphisms (SNPs) in dyslexia candidate genes that had been repeatedly implicated across studies. We then assessed the SNPs for association in the richly phenotyped longitudinal data set from the Dutch Dyslexia Program. We tested for association with several quantitative traits, including word and nonword reading fluency, rapid naming, phoneme deletion, and nonword repetition. In this, we took advantage of the longitudinal nature of the sample to examine if associations were stable across four educational time-points (from 7 to 12 years). Two SNPs in the KIAA0319 gene were nominally associated with rapid naming, and these associations were stable across different ages. Genetic association analysis with complex cognitive traits can be enriched through the use of longitudinal information on trait development.

    Original languageEnglish
    Pages (from-to)452-460
    Number of pages9
    JournalEuropean Journal of Human Genetics
    Volume25
    Issue number4
    DOIs
    Publication statusPublished - Apr-2017

    Keywords

    • COGNITIVE TRAIT LOCI
    • DEVELOPMENTAL DYSLEXIA
    • SUSCEPTIBILITY GENE
    • READING-DISABILITY
    • KIAA0319
    • FAMILIES
    • DCDC2
    • POPULATION
    • CHILDREN
    • LANGUAGE

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