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Transmission disequilibrium analysis of the functional 5-HT_3A receptor variant C178T in early-onset obsessive—compulsive disorder

Department of Psychiatry and Psychotherapy, University of Würzburg, Würzburg, Germany, rainald.mossner{at}mail.uni-wurzberg.de

Nicole Döring

Department of Psychiatry and Psychotherapy, University of Würzburg, Würzburg, Germany

André Scherag

Institute for Medical Biometry and Epidemiology, Philipps-University Marburg, Marburg, Germany

Helmut Schäfer

Institute for Medical Biometry and Epidemiology, Philipps-University Marburg, Marburg, Germany

Beate Herpertz-Dahlmann

Department of Child and Adolescent Psychiatry, Technical University of Aachen, Aachen, Germany

Helmut Remschmidt

Clinical Research Group, Department of Child and Adolescent Psychiatry, Philipps-University Marburg, Marburg, Germany

Eberhard Schulz

Department of Child and Adolescent Psychiatry, University of Freiburg, Freiburg, Germany

Tobias Renner

Department of Child and Adolescent Psychiatry, University of Würzburg, Würzburg, Germany

Christoph Wewetzer

Department of Child and Adolescent Psychiatry, University of Würzburg, Würzburg, Germany

Andreas Warnke

Department of Child and Adolescent Psychiatry, University of Würzburg, Würzburg, Germany

Klaus-Peter Lesch

Department of Psychiatry and Psychotherapy, University of Würzburg, Würzburg, Germany

Susanne Walitza

Department of Child and Adolescent Psychiatry, University of Würzburg, Würzburg, Germany

The 5-HT₃ receptor is unique among the serotonin receptors in that it is a ligand-gated ion channel. Dysfunction of the serotonin system is thought to contribute to the pathogenesis of obsessive—compulsive disorder (OCD). Apart from the standard treatment with serotonin reuptake inhibitors and behavioural therapy, a 5-HT₃ receptor antagonist has recently been shown to benefit some OCD patients, suggesting the 5-HT₃ receptor as a serotonergic candidate gene in the polygenic aetiology of OCD. A functional regulatory variant of the 5-HT_3A receptor influences 5-HT ₃ receptor expression, serotonin metabolites in cerebrospinal fluid, and amygdala reactivity. We therefore assessed whether this C178T variant influences the risk of developing OCD. In a family-based approach employing the transmission disequilibrium test, we analysed a unique sample of 75 children and adolescents with OCD, as well as their biological parents. We found no evidence for a preferential transmission of either allele to the patients — the estimated transmission rate for the C allele was 0.51 (95% CI 0.36—0.65). This argues against an involvement of the 5-HT_3A receptor in the polygenic aetiology of early-onset OCD.

Key Words: OCD • serotonin • HTR3A

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This version was published on November 1, 2007

Journal of Psychopharmacology, Vol. 21, No. 8, 833-836 (2007)
DOI: 10.1177/0269881106073560


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This Article Abstract Free Full Text (Free PDF) Free Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Mössner, R. Articles by Walitza, S. Search for Related Content PubMed PubMed Citation Articles by Mössner, R. Articles by Walitza, S. Pubmed/NCBI databases Gene GEO Profiles HomoloGene UniGene Medline Plus Health Information Obsessive-Compulsive Disorder Social Bookmarking                         What's this?