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Genetic Polymorphism of the Serotonin Transporter Gene, SLC6A4 rs16965628, Is Associated with Obsessive Compulsive Disorder.

Abstract：

:Obsessive compulsive disorder (OCD) is a psychiatric disorder characterized by obsessive ideas and compulsive behaviors. Genetic studies have centered on candidate genes involved in OCD etiology related to serotonergic and dopaminergic systems. In this study, the relationship between cathechol-O-methyltransferase (COMT) -287A/G (rs2097063), serotonin transporters 5-HTTLPR I/D, and SLC6A4 rs16965628 polymorphisms in 80 OCD patients and 100 healthy controls was determined. Patients and controls were genotyped for COMT rs2097063 and SLC6A4 rs16965628 polymorphisms by real-time polymerase chain reaction (PCR). The 5-HTTLPR I/D polymorphism was genotyped using PCR and agarose gel electrophoresis. Severity of symptoms was checked with a Yale-Brown Obsession Compulsion Scale (Y-BOCS). When the OCD group and controls were compared, no significant difference was found between COMT -287A/G (rs2097063), 5-HTTLPR I/D polymorphisms, and OCD. However, a significant difference was found between 5-HTT rs16965628 polymorphism and OCD (p=0.025, OR=3.43, 95% CI 1.41-10.35). In addition, the G allele frequency was found to be higher for rs16965628 in the OCD group. No significant difference was observed between COMT -287A/G (rs2097063), SLC6A4 rs16965628, and 5-HTTLPR I/D polymorphisms and Y-BOCS scores (p>0.05). There was also lack of correlation between Yale-Brown scores and gender of OCD patients. On the other hand, combined genotypes of SLC6A4 rs16965628 GG+GC were found to be risk factors for OCD development (p=0.02, OR=3.464; 95% CI 1.214-9.883) in logistic regression analysis adjusted for age and gender. Our findings suggest that subjects carrying the G allele of rs16965628 have genetic susceptibility to OCD. These data are the first to suggest that polymorphism in serotonin transporter (rs16965628) is associated with the development of OCD in the Turkish population.

journal_name

Genet Test Mol Biomarkers

journal_title

Genetic testing and molecular biomarkers

authors

Cengiz M,Okutan SN,Bayoglu B,Sakalli Kani A,Bayar R,Kocabasoglu N

doi

10.1089/gtmb.2014.0319

subject

Has Abstract

pub_date

2015-05-01 00:00:00

pages

228-34

issue

eissn

1945-0265

issn

1945-0257

journal_volume

pub_type

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Genetic Polymorphism of the Serotonin Transporter Gene, SLC6A4 rs16965628, Is Associated with Obsessive Compulsive Disorder.