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Next-generation DNA sequencing identifies novel gene variants and pathways involved in specific language impairment
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Copy Number Variation Screen Identifies a Rare De Novo Deletion at Chromosome 15q13.1-13.3 in a Child with Language Impairment
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Copy number variation screen identifies a rare de novo deletion at chromosome 15q13.1-13.3 in a child with language impairment
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Pettigrew, Kerry A.; Reeves, Emily; Leavett, Ruth; Hayiou-Thomas, Marianna E.; Sharma, Anahita; Simpson, Nuala H.; Martinelli, Angela; Thompson, Paul; Hulme, Charles; Snowling, Margaret J.; Newbury, Dianne F.; Paracchini, Silvia. - 2015
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Abstract:
A significant proportion of children (up to 7% in the UK) present with pronounced language difficulties that cannot be explained by obvious causes like other neurological and medical conditions. A substantial genetic component is predicted to underlie such language problems. Copy number variants (CNVs) have been implicated in neurodevelopmental and psychiatric conditions, such as autism and schizophrenia, but it is not fully established to what extent they might contribute to language disorders. We conducted a CNV screen in a longitudinal cohort of young children with language-related difficulties (n = 85), focusing on single events at candidate loci. We detected a de novo deletion on chromosome 15q13.1–13.3. The adjacent 15q11-13.1 locus is disrupted in Prader-Willi and Angelman syndromes, while disruptions across the breakpoints (BP1-BP6) have previously been implicated in different neurodevelopmental phenotypes including autism, intellectual disability (ID), seizures and developmental delay (DD). This is the first report of a deletion at BP3-BP5 being linked to a deficit confined to language impairment, in the absence of ID, expanding the range of phenotypes that implicate the chromosome 15q13 locus. ; Publisher PDF ; Peer reviewed
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Keyword:
Agricultural and Biological Sciences(all); Biochemistry; Genetics and Molecular Biology(all); NDAS; QH426; QH426 Genetics; R; R Medicine
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URL: http://hdl.handle.net/10023/7231 https://doi.org/10.1371/journal.pone.0134997 http://www.scopus.com/inward/record.url?scp=84942891872&partnerID=8YFLogxK
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Genome-wide screening for DNA variants associated with reading and language traits
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Genome-wide association analyses of child genotype effects and parent-of-origin effects in specific language impairment
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Copy number variation screen identifies a rare de novo deletion at chromosome 15q13.1-13.3 in a child with language impairment
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Associations of HLA alleles with specific language impairment
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Homozygous microdeletion of exon 5 in ZNF277 in a girl with specific language impairment.
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Increased prevalence of sex chromosome aneuploidies in specific language impairment and dyslexia.
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Associations of HLA alleles with specific language impairment
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Increased prevalence of sex chromosome aneuploidies in specific language impairment and dyslexia
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Increased prevalence of sex chromosome aneuploidies in specific language impairment and dyslexia
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