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Gepubliceerd in: Journal of Autism and Developmental Disorders 4/2007

01-04-2007 | Original Paper

Characterization of an Autism-Associated Segmental Maternal Heterodisomy of the Chromosome 15q11–13 Region

Auteurs: Dorota A. Kwasnicka-Crawford, Wendy Roberts, Stephen W. Scherer

Gepubliceerd in: Journal of Autism and Developmental Disorders | Uitgave 4/2007

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Abstract

Cytogenetic abnormalities in the Prader-Willi/Angelman syndrome (PWS/AS) critical region have been described in individuals with autism. Maternal duplications and linkage disequilibrium in families with autism suggest the existence of a susceptibility locus at 15q11–q13. Here, we describe a 6-year-old girl diagnosed with autism, developmental delay, and delayed expressive and receptive language. The karyotype was designated de novo 47, XX, idic(15)(q13). Fluorescence in situ hybridization (FISH) and molecular analysis with 15q11–q13 markers revealed an additional copy of the region being of maternal origin. Duplication of the 15q11–q13 segment represents the most consistent known chromosomal abnormality reported in association with autism. This present case report reinforces the hypothesis that additional copies of this chromosome segment are causally related to autism.
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Metagegevens
Titel
Characterization of an Autism-Associated Segmental Maternal Heterodisomy of the Chromosome 15q11–13 Region
Auteurs
Dorota A. Kwasnicka-Crawford
Wendy Roberts
Stephen W. Scherer
Publicatiedatum
01-04-2007
Gepubliceerd in
Journal of Autism and Developmental Disorders / Uitgave 4/2007
Print ISSN: 0162-3257
Elektronisch ISSN: 1573-3432
DOI
https://doi.org/10.1007/s10803-006-0225-8