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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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journal.pone.0134997.pdf (1.040Mb)
Date
11/08/2015
Author
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
Funder
The Wellcome Trust
Grant ID
097831/z/11/z
Keywords
R Medicine
QH426 Genetics
Biochemistry, Genetics and Molecular Biology(all)
Agricultural and Biological Sciences(all)
NDAS
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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.
Citation
Pettigrew , K A , Reeves , E , Leavett , R , Hayiou-Thomas , M E , Sharma , A , Simpson , N H , Martinelli , A , Thompson , P , Hulme , C , Snowling , M J , Newbury , D F & Paracchini , S 2015 , ' Copy number variation screen identifies a rare de novo deletion at chromosome 15q13.1-13.3 in a child with language impairment ' , PLoS ONE , vol. 10 , no. 8 , e0134997 . https://doi.org/10.1371/journal.pone.0134997
Publication
PLoS ONE
Status
Peer reviewed
DOI
https://doi.org/10.1371/journal.pone.0134997
ISSN
1932-6203
Type
Journal article
Rights
Copyright: © 2015 Pettigrew et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
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  • University of St Andrews Research
URL
http://www.scopus.com/inward/record.url?scp=84942891872&partnerID=8YFLogxK
URI
http://hdl.handle.net/10023/7231

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