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Lookup NU author(s): Professor Jeremy Parr, Professor Ann Le Couteur
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The characteristics of early developmental regression (EDR) were investigated in individuals with ASD from affected relative pairs recruited to the International Molecular Genetic Study of Autism Consortium (IMGSAC). Four hundred and fifty-eight individuals with ASD were recruited from 226 IMGSAC families. Regression before age 36 months occurred in 23.9% of individuals. The observed concordance rate for EDR within sibling pairs (18.9%) was not significantly above the rate expected under independence (13.5%, p = 0.10). The rate of regression in individuals with ASD from multiplex families was similar to that reported in singleton and epidemiological samples. Regression concordance data were not supportive of a separate familial influence on EDR, other than as a part of autism itself. © 2010 Springer Science+Business Media, LLC.
Author(s): Parr J, Le Couteur A, Baird G, Rutter M, Pickles A, Fombonne E, Bailey A
Publication type: Article
Publication status: Published
Journal: Journal of Autism and Developmental Disorders
Year: 2010
Volume: 41
Issue: 3
Pages: 332-340
Print publication date: 14/08/2010
ISSN (print): 0162-3257
ISSN (electronic): 1573-3432
Publisher: Springer New York LLC
URL: http://dx.doi.org/10.1007/s10803-010-1055-2
DOI: 10.1007/s10803-010-1055-2
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