Genome-wide analysis of genetic susceptibility to language impairment in an isolated Chilean population
Specific language impairment (SLI) is an unexpected deficit in the acquisition of language skills and affects between 5 and 8% of pre-school children. Despite its prevalence and high heritability, our understanding of the aetiology of this disorder is only emerging. In this paper, we apply genome-wi...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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2011
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| _version_ | 1826306206217535488 |
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| author | Villanueva, P Newbury, D Jara, L De Barbieri, Z Mirza, G Palamino, H Fernández, M Cazier, J Monaco, A Palomino, H |
| author_facet | Villanueva, P Newbury, D Jara, L De Barbieri, Z Mirza, G Palamino, H Fernández, M Cazier, J Monaco, A Palomino, H |
| author_sort | Villanueva, P |
| collection | OXFORD |
| description | Specific language impairment (SLI) is an unexpected deficit in the acquisition of language skills and affects between 5 and 8% of pre-school children. Despite its prevalence and high heritability, our understanding of the aetiology of this disorder is only emerging. In this paper, we apply genome-wide techniques to investigate an isolated Chilean population who exhibit an increased frequency of SLI. Loss of heterozygosity (LOH) mapping and parametric and non-parametric linkage analyses indicate that complex genetic factors are likely to underlie susceptibility to SLI in this population. Across all analyses performed, the most consistently implicated locus was on chromosome 7q. This locus achieved highly significant linkage under all three non-parametric models (max NPL6.73, P4.0 × 10 11). In addition, it yielded a HLOD of 1.24 in the recessive parametric linkage analyses and contained a segment that was homozygous in two affected individuals. Further, investigation of this region identified a two-SNP haplotype that occurs at an increased frequency in language-impaired individuals (P0.008). We hypothesise that the linkage regions identified here, in particular that on chromosome 7, may contain variants that underlie the high prevalence of SLI observed in this isolated population and may be of relevance to other populations affected by language impairments. © 2011 Macmillan Publishers Limited All rights reserved. |
| first_indexed | 2024-03-07T06:44:25Z |
| format | Journal article |
| id | oxford-uuid:fa610c8c-cfc6-4cbf-9cfe-f85760ac1ef7 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:44:25Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:fa610c8c-cfc6-4cbf-9cfe-f85760ac1ef72022-03-27T13:05:23ZGenome-wide analysis of genetic susceptibility to language impairment in an isolated Chilean populationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fa610c8c-cfc6-4cbf-9cfe-f85760ac1ef7EnglishSymplectic Elements at Oxford2011Villanueva, PNewbury, DJara, LDe Barbieri, ZMirza, GPalamino, HFernández, MCazier, JMonaco, APalomino, HSpecific language impairment (SLI) is an unexpected deficit in the acquisition of language skills and affects between 5 and 8% of pre-school children. Despite its prevalence and high heritability, our understanding of the aetiology of this disorder is only emerging. In this paper, we apply genome-wide techniques to investigate an isolated Chilean population who exhibit an increased frequency of SLI. Loss of heterozygosity (LOH) mapping and parametric and non-parametric linkage analyses indicate that complex genetic factors are likely to underlie susceptibility to SLI in this population. Across all analyses performed, the most consistently implicated locus was on chromosome 7q. This locus achieved highly significant linkage under all three non-parametric models (max NPL6.73, P4.0 × 10 11). In addition, it yielded a HLOD of 1.24 in the recessive parametric linkage analyses and contained a segment that was homozygous in two affected individuals. Further, investigation of this region identified a two-SNP haplotype that occurs at an increased frequency in language-impaired individuals (P0.008). We hypothesise that the linkage regions identified here, in particular that on chromosome 7, may contain variants that underlie the high prevalence of SLI observed in this isolated population and may be of relevance to other populations affected by language impairments. © 2011 Macmillan Publishers Limited All rights reserved. |
| spellingShingle | Villanueva, P Newbury, D Jara, L De Barbieri, Z Mirza, G Palamino, H Fernández, M Cazier, J Monaco, A Palomino, H Genome-wide analysis of genetic susceptibility to language impairment in an isolated Chilean population |
| title | Genome-wide analysis of genetic susceptibility to language impairment in an isolated Chilean population |
| title_full | Genome-wide analysis of genetic susceptibility to language impairment in an isolated Chilean population |
| title_fullStr | Genome-wide analysis of genetic susceptibility to language impairment in an isolated Chilean population |
| title_full_unstemmed | Genome-wide analysis of genetic susceptibility to language impairment in an isolated Chilean population |
| title_short | Genome-wide analysis of genetic susceptibility to language impairment in an isolated Chilean population |
| title_sort | genome wide analysis of genetic susceptibility to language impairment in an isolated chilean population |
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