The DRD2 gene 957C> T polymorphism is associated with posttraumatic stress disorder in war veterans

Joanne Voisey*, Christopher Dean Swagell, Ian Paul Hughes, Charles Phillip Morris, Angela Van Daal, Earnest P. Noble, Burnett Kann, Karen A. Heslop, Ross Mc D Young, Bruce Robert Lawford

*Corresponding author for this work

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Abstract

Background: Variations in genes related to the dopaminergic pathway have been implicated in neuropsychiatry disorders such as schizophrenia, substance misuse, Alzheimer's disease and Post Traumatic Stress Disorder (PTSD). A single nucleotide polymorphism (SNP) (957C>T) and a deletion polymorphism (-141delC) in the DRD2 gene and a SNP (Taq 1A) in a gene directly downstream of DRD2 have all been implicated in dopamine functioning in the brain. Methods: To test the importance of these three polymorphisms in PTSD susceptibility, a genetic screen was performed in 127 war veterans diagnosed with PTSD and 228 control individuals without a history of PTSD. Results: No significant association was found between PTSD and the Taq 1A or -141delC polymorphisms. However, a significant association was observed with PTSD and the 957C> T polymorphism. PTSD individuals were more likely to carry the C allele compared to the controls (P = 0.021). Conclusions: Our findings suggest that the 957C> T polymorphism in the DRD2 gene is one of the genetic factors for susceptibility to PTSD. .

Original languageEnglish
Pages (from-to)28-33
Number of pages6
JournalDepression and Anxiety
Volume26
Issue number1
DOIs
Publication statusPublished - Jan 2009
Externally publishedYes

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Voisey, J., Swagell, C. D., Hughes, I. P., Morris, C. P., Van Daal, A., Noble, E. P., ... Lawford, B. R. (2009). The DRD2 gene 957C> T polymorphism is associated with posttraumatic stress disorder in war veterans. Depression and Anxiety, 26(1), 28-33. https://doi.org/10.1002/da.20517