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http://purl.uniprot.org/citations/25596506http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/25596506http://www.w3.org/2000/01/rdf-schema#comment"

Objective

To delineate the specific speech deficits in individuals with epilepsy-aphasia syndromes associated with mutations in the glutamate receptor subunit gene GRIN2A.

Methods

We analyzed the speech phenotype associated with GRIN2A mutations in 11 individuals, aged 16 to 64 years, from 3 families. Standardized clinical speech assessments and perceptual analyses of conversational samples were conducted.

Results

Individuals showed a characteristic phenotype of dysarthria and dyspraxia with lifelong impact on speech intelligibility in some. Speech was typified by imprecise articulation (11/11, 100%), impaired pitch (monopitch 10/11, 91%) and prosody (stress errors 7/11, 64%), and hypernasality (7/11, 64%). Oral motor impairments and poor performance on maximum vowel duration (8/11, 73%) and repetition of monosyllables (10/11, 91%) and trisyllables (7/11, 64%) supported conversational speech findings. The speech phenotype was present in one individual who did not have seizures.

Conclusions

Distinctive features of dysarthria and dyspraxia are found in individuals with GRIN2A mutations, often in the setting of epilepsy-aphasia syndromes; dysarthria has not been previously recognized in these disorders. Of note, the speech phenotype may occur in the absence of a seizure disorder, reinforcing an important role for GRIN2A in motor speech function. Our findings highlight the need for precise clinical speech assessment and intervention in this group. By understanding the mechanisms involved in GRIN2A disorders, targeted therapy may be designed to improve chronic lifelong deficits in intelligibility."xsd:string
http://purl.uniprot.org/citations/25596506http://purl.org/dc/terms/identifier"doi:10.1212/wnl.0000000000001228"xsd:string
http://purl.uniprot.org/citations/25596506http://purl.uniprot.org/core/author"Turner S.J."xsd:string
http://purl.uniprot.org/citations/25596506http://purl.uniprot.org/core/author"Scheffer I.E."xsd:string
http://purl.uniprot.org/citations/25596506http://purl.uniprot.org/core/author"Morgan A.T."xsd:string
http://purl.uniprot.org/citations/25596506http://purl.uniprot.org/core/author"Mandelstam S.A."xsd:string
http://purl.uniprot.org/citations/25596506http://purl.uniprot.org/core/author"Verhoeven A."xsd:string
http://purl.uniprot.org/citations/25596506http://purl.uniprot.org/core/author"Mayes A.K."xsd:string
http://purl.uniprot.org/citations/25596506http://purl.uniprot.org/core/date"2015"xsd:gYear
http://purl.uniprot.org/citations/25596506http://purl.uniprot.org/core/name"Neurology"xsd:string
http://purl.uniprot.org/citations/25596506http://purl.uniprot.org/core/pages"586-593"xsd:string
http://purl.uniprot.org/citations/25596506http://purl.uniprot.org/core/title"GRIN2A: an aptly named gene for speech dysfunction."xsd:string
http://purl.uniprot.org/citations/25596506http://purl.uniprot.org/core/volume"84"xsd:string
http://purl.uniprot.org/citations/25596506http://www.w3.org/2004/02/skos/core#exactMatchhttp://purl.uniprot.org/pubmed/25596506
http://purl.uniprot.org/citations/25596506http://xmlns.com/foaf/0.1/primaryTopicOfhttps://pubmed.ncbi.nlm.nih.gov/25596506
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http://purl.uniprot.org/uniprot/#_A0A890YTL4-mappedCitation-25596506http://www.w3.org/1999/02/22-rdf-syntax-ns#objecthttp://purl.uniprot.org/citations/25596506
http://purl.uniprot.org/uniprot/#_Q12879-mappedCitation-25596506http://www.w3.org/1999/02/22-rdf-syntax-ns#objecthttp://purl.uniprot.org/citations/25596506
http://purl.uniprot.org/uniprot/#_Q59EW6-mappedCitation-25596506http://www.w3.org/1999/02/22-rdf-syntax-ns#objecthttp://purl.uniprot.org/citations/25596506
http://purl.uniprot.org/uniprot/#_Q547U9-mappedCitation-25596506http://www.w3.org/1999/02/22-rdf-syntax-ns#objecthttp://purl.uniprot.org/citations/25596506
http://purl.uniprot.org/uniprot/Q12879http://purl.uniprot.org/core/mappedCitationhttp://purl.uniprot.org/citations/25596506
http://purl.uniprot.org/uniprot/Q547U9http://purl.uniprot.org/core/mappedCitationhttp://purl.uniprot.org/citations/25596506
http://purl.uniprot.org/uniprot/B4DII7http://purl.uniprot.org/core/mappedCitationhttp://purl.uniprot.org/citations/25596506
http://purl.uniprot.org/uniprot/A0A890YTL4http://purl.uniprot.org/core/mappedCitationhttp://purl.uniprot.org/citations/25596506
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