Further evidence for genetic variation at the serotonin transporter gene SLC6A4 contributing toward anxiety
| Autor: | Franziska Geiser, Jessica Becker, Markus M. Nöthen, Rupert Conrad, Anne C. Böhmer, Timo Hess, Elisabeth Mangold, Anna Maaser, Antje Bittner, Andreas J Forstner, Kerstin U. Ludwig, Johannes Schumacher, Alexandra Kleiman, Stefanie Rambau, Nina Friedrich |
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| Rok vydání: | 2017 |
| Předmět: |
Adult
Male 0301 basic medicine Candidate gene Genotype Single-nucleotide polymorphism Anxiety Polymorphism Single Nucleotide Linkage Disequilibrium 03 medical and health sciences 0302 clinical medicine Gene Frequency Risk Factors Germany Genetics medicine Humans Genetic Predisposition to Disease Bipolar disorder Allele Biological Psychiatry Genetics (clinical) Serotonin transporter Genetic association Serotonin Plasma Membrane Transport Proteins biology Genetic Variation Middle Aged medicine.disease Anxiety Disorders Psychiatry and Mental health 030104 developmental biology Case-Control Studies biology.protein Harm avoidance Female medicine.symptom Psychology 030217 neurology & neurosurgery |
| Zdroj: | Psychiatric Genetics. 27:96-102 |
| ISSN: | 0955-8829 |
| DOI: | 10.1097/ypg.0000000000000171 |
| Popis: | Social anxiety disorder (SAD) is a common and heritable psychiatric disorder. However, genetic studies in SAD are rare and only a few candidate genes have been implicated so far. In the present study, we investigated whether single-nucleotide polymorphisms (SNPs) associated with other psychiatric disorders also contribute toward the development of SAD and followed up variants associated with SAD on the phenotypic level. We genotyped a total of 24 SNPs in a German sample of 321 SAD patients and 804 controls. We carried out single-marker analyses as well as quantitative association analyses of SAD severity and harm avoidance. None of the variants investigated showed an association with SAD in our case-control sample after Bonferroni correction. Two SNPs reached nominal significance (rs818702, P=0.032; rs140701, P=0.048). Of these, only rs140701 showed an association in the same allelic direction as reported previously. This SNP is located within the serotonin transporter gene SLC6A4, which is the primary target of selective-serotonin reuptake inhibitors used for the treatment of depressive and anxiety disorders. The quantitative association analysis of all cases with available data on symptom severity showed four SNPs with a nominal significant association. Among these SNPs, rs10994359 showed the strongest association (P=0.001) and was located near the ANK3 gene. In addition, rs10994359 was nominally associated with harm avoidance scores (P=0.001). Our results provide further evidence for an involvement of the serotonin transporter gene SLC6A4 in the etiology of anxiety-related traits. Furthermore, our study implicates that genetic variation at the genome-wide associated bipolar disorder locus ANK3 might influence anxiety-related personality traits. |
| Databáze: | OpenAIRE |
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