Analysis of genetic variants of dyslexia candidate genes KIAA0319 and DCDC2 in Indian population

J Hum Genet. 2013 Aug;58(8):531-8. doi: 10.1038/jhg.2013.46. Epub 2013 May 16.

Abstract

Developmental dyslexia (DD) is a heritable, complex genetic disorder associated with impairment in reading and writing skills despite having normal intellectual ability and appropriate educational opportunities. Chromosome 6p23-21.3 at DYX2 locus has showed the most consistent evidence of linkage for DD and two susceptible genes KIAA0319 and DCDC2 for DD at DYX2 locus showed significant association. Specific candidate gene-association studies have identified variants, risk haplotypes and microsatellites of KIAA0319 and DCDC2 correlated with wide range of reading-related traits. In this study, we used a case-control approach for analyzing single-nucleotide polymorphisms (SNPs) in KIAA0319 and DCDC2. Our study demonstrated the association of DD with SNP rs4504469 of KIAA0319 and not with any SNPs of DCDC2.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alleles
  • Case-Control Studies
  • Child, Preschool
  • Dyslexia / genetics*
  • Female
  • Gene Frequency / genetics
  • Genetic Association Studies*
  • Genetic Predisposition to Disease
  • Genetic Variation*
  • Humans
  • India
  • Male
  • Microtubule-Associated Proteins / genetics*
  • Models, Genetic
  • Nerve Tissue Proteins / genetics*
  • Neuropsychological Tests
  • Polymorphism, Single Nucleotide
  • Reading

Substances

  • DCDC2 protein, human
  • KIAA0319 protein, human
  • Microtubule-Associated Proteins
  • Nerve Tissue Proteins