Depression and Anxiety Related to COMT Gene in the General Population
Author Information
Author(s): Bækken Petter M, Skorpen Frank, Stordal Eystein, Zwart John-Anker, Hagen Knut
Primary Institution: Norwegian University of Science and Technology
Hypothesis
What is the relationship between the Val158Met COMT gene polymorphism and anxiety and depression in the general population?
Conclusion
The study found no clear association between the Val158Met polymorphism and depression and anxiety, although the Met/Met genotype was less common among men with higher depression scores.
Supporting Evidence
- The study included a large sample size of 5531 individuals.
- Results showed no significant association between the Val158Met polymorphism and anxiety or depression using standard cut-off scores.
- Men with the Met/Met genotype had lower prevalence of depression when using a higher cut-off score.
Takeaway
This study looked at how a specific gene might affect feelings of sadness and worry in a large group of people, but didn't find a strong link.
Methodology
The study evaluated the association between the Val158Met polymorphism and anxiety and depression using the Hospital Anxiety and Depression Scale (HADS) in a random sample of 5531 individuals.
Potential Biases
Potential bias due to the ethnic homogeneity of the sample and the non-participation of individuals with psychiatric disorders.
Limitations
The association findings may be incidental due to the small number of cases and the study's reliance on self-reported data.
Participant Demographics
The study population consisted of unselected adults from Nord-Trøndelag County, Norway, with less than 3% of non-Caucasian ethnicity.
Statistical Information
P-Value
0.006
Confidence Interval
95% CI = 0.18–0.76
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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