Linkage disequilibrium at the Angelman syndrome gene UBE3A in autism families.

Published

Journal Article

Autistic disorder is a neurodevelopmental disorder with a complex genetic etiology. Observations of maternal duplications affecting chromosome 15q11-q13 in patients with autism and evidence for linkage and linkage disequilibrium to markers in this region in chromosomally normal autism families indicate the existence of a susceptibility locus. We have screened the families of the Collaborative Linkage Study of Autism for several markers spanning a candidate region covering approximately 2 Mb and including the Angelman syndrome gene (UBE3A) and a cluster of gamma-aminobutyric acid (GABA(A)) receptor subunit genes (GABRB3, GABRA5, and GABRG3). We found significant evidence for linkage disequilibrium at marker D15S122, located at the 5' end of UBE3A. This is the first report, to our knowledge, of linkage disequilibrium at UBE3A in autism families. Characterization of null alleles detected at D15S822 in the course of genetic studies of this region showed a small (approximately 5-kb) genomic deletion, which was present at somewhat higher frequencies in autism families than in controls.

Full Text

Duke Authors

Cited Authors

  • Nurmi, EL; Bradford, Y; Chen, Y; Hall, J; Arnone, B; Gardiner, MB; Hutcheson, HB; Gilbert, JR; Pericak-Vance, MA; Copeland-Yates, SA; Michaelis, RC; Wassink, TH; Santangelo, SL; Sheffield, VC; Piven, J; Folstein, SE; Haines, JL; Sutcliffe, JS

Published Date

  • September 2001

Published In

Volume / Issue

  • 77 / 1-2

Start / End Page

  • 105 - 113

PubMed ID

  • 11543639

Pubmed Central ID

  • 11543639

International Standard Serial Number (ISSN)

  • 0888-7543

Digital Object Identifier (DOI)

  • 10.1006/geno.2001.6617

Language

  • eng

Conference Location

  • United States