Chapter

Isolated Populations and Common Variants

Karola Rehnström and Leena Peltonen

in Autism Spectrum Disorders

Published on behalf of Oxford University Press

Published in print May 2011 | ISBN: 9780195371826
Published online September 2012 | e-ISBN: 9780199965212 | DOI: http://dx.doi.org/10.1093/med/9780195371826.003.0049
Isolated Populations and Common Variants

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  • Child and Adolescent Psychiatry
  • Neurology
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Isolated populations are defined as populations originating from a small number of founders, experiencing only limited immigration, and where expansion has primarily taken place through population growth. The lack of immigration often results from either geographical or cultural isolation. Isolated populations have been used successfully in genetic mapping of Mendelian disorders because of the reduced genetic heterogeneity. Emerging results from genome-wide association studies suggest that for some phenotypes, isolated populations also offer advantages in mapping of common genetic risk factors. As each isolate is uniquely different because of different demographic histories, careful characterization of the population substructure is crucial for optimal study design.

Chapter.  8153 words.  Illustrated.

Subjects: Child and Adolescent Psychiatry ; Neurology ; Neuroscience

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