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Udgivet

Microduplication of 15q13.3 and Xq21.31 in a family with Tourette syndrome and comorbidities

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Vis graf over relationer

Tourette syndrome (TS) is a childhood onset neurodevelopmental disorder. Although it is widely accepted that genetic factors play a significant role in TS pathogenesis the etiology of this disorder is largely unknown. Identification of rare copy number variations (CNVs) as susceptibility factors in several neuropsychiatric disorders such as attention deficit-hyperactivity disorder (ADHD), autism and schizophrenia, suggests involvement of these rare structural changes also in TS etiology. In a male patient with TS, ADHD, and OCD (obsessive compulsive disorder) we identified two microduplications (at 15q13.3 and Xq21.31) inherited from a mother with subclinical ADHD. The 15q duplication included the CHRNA7 gene; while two genes, PABPC5 and PCDH11X, were within the Xq duplication. The Xq21.31 duplication was present in three brothers with TS including the proband, but not in an unaffected brother, whereas the 15q duplication was present only in the proband and his mother. The structural variations observed in this family may contribute to the observed symptoms, but further studies are necessary to investigate the possible involvement of the described variations in the TS etiology.

OriginalsprogEngelsk
TidsskriftAmerican Journal of Medical Genetics. Part B: Neuropsychiatric Genetics
Vol/bind162
Udgave nummer8
Sider (fra-til)825-831
Antal sider7
ISSN1552-485X
DOI
StatusUdgivet - 2013

ID: 43091565