Life events, first depression onset and the serotonin transporter gene

Kay Wilhelm*, Philip B. Mitchell, Heather Niven, Adam Finch, Lucinda Wedgwood, Anna Scimone, Ian P. Blair, Gordon Parker, Peter R. Schofield

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

245 Citations (Scopus)

Abstract

Background: A relationship between the serotonin transporter gene, adverse events and onset of major depression has been reported. Aims: To replicate a gene x environment interaction in a cohort with longitudinal data for life events, experience of depression, parental bonding and neuroticism. Method: At the 25-year follow-up, genomic DNA was obtained from 127 cohort members (mean age 48 years) to determine the genotype of the serotonin transporter gene-linked promoter region (5-HTTLPR). Associations were investigated between the 5-HTTLPR genotype, positive and adverse life events and the gene x environment interaction, and also between the 5-HTTLPR genotype and risk factors for depression. Results: No relationship was found between 5-HTTLPR genotype and either risk factors for depression or positive life events. Adverse life events had a significantly greater impact on the onset of depression for individuals with the s/s genotype. Conclusions: The 5-HTTLPR genotype is a significant predictor of onset of major depression following multiple adverse events. This is one of the more robust findings concerning specific biological risk factors for depression.

Original languageEnglish
Pages (from-to)210-215
Number of pages6
JournalBritish Journal of Psychiatry
Volume188
Issue numberMAR.
DOIs
Publication statusPublished - Mar 2006
Externally publishedYes

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