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Association Study of Dopamine Transporter Gene (DAT1) Variable Tandem Repeat Sequence (VNTR) with Obsessive-compulsive Disorder in Chinese Han Population

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Specialty General Medicine
Date 2015 Jun 12
PMID 26064393
Citations 3
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Abstract

Objective: Multiple evidence suggests an involvement of the dopamine neurotransmitter system in Obsessive-compulsive disorder (OCD). Therefore, we explore the association of 3'UTR region of 40 bp variable tandem repeat (VNTR) polymorphism in Dopamine Transporter Gene (DAT1) in Chinese Han population.

Methods: A total of 305 OCD patients and 435 healthy individuals were recruited for the study. OCD was diagnosed with the Forth Edition (DSM-IV) diagnostic criteria. After polymerase chain reaction of VNTR was used to evaluate the 40 bp VNTR polymorphism in DAT1, a case-control association analysis was performed by the χ(2) test.

Results: The results showed that no association was found between OCD patients and controls for the genotype distribution (X(2) =0.743, P=0.690, df=2) as well as allelic (X(2)=0.172, P=0.678, OR=0.928, 95% Cl=0.885-1.224) distribution.

Conclusions: Our data suggest that the 40 bp VNTR polymorphism in DAT1 may not be associated with susceptibility to OCD in the Chinese Han population studied. However, this result needed to be replicated from different populations.

Citing Articles

Association analyses reveal gender-specific associations of DAT1 40-bp VNTR and -839C/T polymorphisms with obsessive-compulsive disorder and obsessive-compulsive symptoms.

Cotrin J, Fontenelle L, Kohlrausch F Mol Biol Rep. 2019; 46(5):5155-5162.

PMID: 31325142 DOI: 10.1007/s11033-019-04971-9.


Genetics of obsessive-compulsive disorder.

Purty A, Nestadt G, Samuels J, Viswanath B Indian J Psychiatry. 2019; 61(Suppl 1):S37-S42.

PMID: 30745675 PMC: 6343406. DOI: 10.4103/psychiatry.IndianJPsychiatry_518_18.


DNA Methylation at the DAT Promoter and Risk for Psychopathology: Intergenerational Transmission between School-Age Youths and Their Parents in a Community Sample.

Cimino S, Cerniglia L, Ballarotto G, Marzilli E, Pascale E, DAddario C Front Psychiatry. 2018; 8:303.

PMID: 29375406 PMC: 5767582. DOI: 10.3389/fpsyt.2017.00303.

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