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1
Aspects of speech-language abilities are influenced by MECP2 mutation type in girls with Rett syndrome
Urbanowicz, Anna
;
Downs, Jenny
;
Girdler, Sonya
...
In: Research outputs 2014 to 2021 (2015)
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2
Aspects of speech-language abilities are influenced by MECP2 mutation type in girls with Rett syndrome
Urbanowicz, Anna
;
Downs, Jenny
;
Girdler, Sonya
;
Ciccone, Natalie
;
Leonard, Helen
. - : John Wiley & Sons, 2015
Abstract:
This study investigates relationships between methyl-CpG-binding protein 2 gene (MECP2) mutation type and speech-language abilities in girls with Rett syndrome. Cross-sectional data on 766 girls, aged 15 years and under, with genetically confirmed Rett syndrome was obtained from the Australian Rett Syndrome Database (ARSD) (n=244) and the International Rett Syndrome Phenotype Database (InterRett) (n=522). Relationships between MECP2 mutation type and age of regression in speech-language abilities, and the level of speech-language abilities before and after this regression were investigated. The females had a median age of 4.95 years in the ARSD and 5.25 years in InterRett. The majority (89%, 685/766) acquired speech-language abilities in the form of babble or words at some point in time. Of those who acquired babble or words, 85% (581/685) experienced a regression in these abilities. Those with a p.Arg133Cys mutation were the most likely to use one or more words, prior to (RRR=3.45; 95% CI 1.15-10.41) and after (RRR=5.99; 95% CI 2.00-17.92), speech-language regression. Girls with Rett syndrome vary in their use of speech and language, and in their experience of speech-language regression and these variations are partly explained by genotype.
Keyword:
1311 Genetics
;
2716 Genetics (clinical)
;
Genotype-phenotype correlation
;
Language
;
MECP2
;
Regression
;
Rett syndrome
;
Speech
URL:
https://espace.library.uq.edu.au/view/UQ:394190
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