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Association of the 5-HTTLPR genotype and unipolar depression: a meta-analysis

Clarke, H., Flint, J., Attwood, A. S., Munafò, M. R.·2010·Psychological Medicine

Abstract

Background: We sought to ascertain the strength of evidence for association between the 5-HTTLPR polymorphism and unipolar depression. Method: We applied meta-analytic techniques to data from relevant published studies, and obtained an estimate of the likely magnitude of effect of any association. We also tested for possible publication bias, and explored the impact of various study design characteristics on the magnitude of the observed effect size. Results: Meta-analysis indicated evidence of a small but statistically significant association between the 5-HTTLPR polymorphism and unipolar depression [odds ratio (OR) 1.08, 95% confidence interval (CI) 1.03–1.12]. This remained significant when data from samples of European and East Asian ancestry were analyzed separately. In all cases there was evidence of significant between-study heterogeneity, although the observed associations were robust to the application of a random-effects framework. Conclusions: Our results support the presence of a small effect of a polymorphism in the serotonin transporter promoter on susceptibility to depression. However, we caution that it is possible that the effect has an artifactual basis, rather than a biological origin.

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Metadata

Authors
Clarke, H., Flint, J., Attwood, A. S., & Munafò, M. R.
Venue
Psychological Medicine
Published
2010-04-12
Volume
40
Issue
11
Pages
1767-1778
ISSN
  • 0033-2917 (ISSN-L)
  • 1469-8978
OpenAlex
W1966865235
Cited by
175
References
11
FWCI
1.00
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Association of the 5-HTTLPR genotype and unipolar depression: a meta-analysis. https://app.cochat.ai/papers/10.1017/s0033291710000516
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Clarke, H., Flint, J., Attwood, A. S., & Munafò, M. R. (2010). Association of the 5-HTTLPR genotype and unipolar depression: a meta-analysis. Psychological Medicine. https://doi.org/10.1017/s0033291710000516

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