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1
Replication of CNTNAP2 association with nonword repetition and support for FOXP2 association with timed reading and motor activities in a dyslexia family sample
Abstract: Two functionally related genes, FOXP2 and CNTNAP2, influence language abilities in families with rare syndromic and common nonsyndromic forms of impaired language, respectively. We investigated whether these genes are associated with component phenotypes of dyslexia and measures of sequential motor ability. Quantitative transmission disequilibrium testing (QTDT) and linear association modeling were used to evaluate associations with measures of phonological memory (nonword repetition, NWR), expressive language (sentence repetition), reading (real word reading efficiency, RWRE; word attack, WATT), and timed sequential motor activities (rapid alternating place of articulation, RAPA; finger succession in the dominant hand, FS-D) in 188 family trios with a child with dyslexia. Consistent with a prior study of language impairment, QTDT in dyslexia showed evidence of CNTNAP2 single nucleotide polymorphism (SNP) association with NWR. For FOXP2, we provide the first evidence for SNP association with component phenotypes of dyslexia, specifically NWR and RWRE but not WATT. In addition, FOXP2 SNP associations with both RAPA and FS-D were observed. Our results confirm the role of CNTNAP2 in NWR in a dyslexia sample and motivate new questions about the effects of FOXP2 in neurodevelopmental disorders.
Keyword: Article
URL: https://doi.org/10.1007/s11689-010-9065-0
http://www.ncbi.nlm.nih.gov/pubmed/21484596
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3163991
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2
Genome Scan of a Nonword Repetition Phenotype in Families with Dyslexia: Evidence for Multiple Loci
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3
Segregation Analysis of Phenotypic Components of Learning Disabilities. I. Nonword Memory and Digit Span
Wijsman, Ellen M.; Peterson, Do; Leutenegger, Anne-Louise. - : The American Society of Human Genetics, 2000
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