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The serotonin transporter polymorphism (5-HTTLPR): allelic variation and links with depressive symptoms

Depression and anxiety, 2010-03, Vol.27 (3), p.260-269 [Peer Reviewed Journal]

2010 Wiley‐Liss, Inc. ;(c) 2010 Wiley-Liss, Inc. ;ISSN: 1091-4269 ;EISSN: 1520-6394 ;DOI: 10.1002/da.20660 ;PMID: 20196101

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  • Title:
    The serotonin transporter polymorphism (5-HTTLPR): allelic variation and links with depressive symptoms
  • Author: Goldman, Noreen ; Glei, Dana A. ; Lin, Yu-Hsuan ; Weinstein, Maxine
  • Subjects: Alleles ; depressive disorder ; Depressive Disorder - ethnology ; Depressive Disorder - genetics ; Depressive Disorder - psychology ; Female ; Genetic Variation - genetics ; Genotype ; Humans ; Life Change Events ; Male ; Middle Aged ; Serotonin Plasma Membrane Transport Proteins - genetics ; SLC6A4 protein ; stressful events ; Taiwan ; Taiwan - epidemiology
  • Is Part Of: Depression and anxiety, 2010-03, Vol.27 (3), p.260-269
  • Description: Background: We compare the genotype distribution for the serotonin transporter polymorphism (5‐HTTLPR) in a sample of older Taiwanese adults with samples of various racial and ethnic groups collected in other studies. We also explore interactions among sex, stressors, and 5‐HTTLPR genotype on depressive symptoms in our sample. Methods: Using a nationally representative sample of 984 Taiwanese aged 53 and older, we model depressive symptoms as a function of 5‐HTTLPR genotype and two classes of stressors: lifetime trauma and recent major life events. We test two‐ and three‐way interactions among stressors, 5‐HTTLPR, and sex. >Results: This sample exhibits higher frequency of S/S and lower frequency of L/L genotype than Western samples, but the distribution is comparable to those in East Asian populations. Nearly 9% carry an allele (XL) that has rarely been reported in the literature. Although the gene–environment (G×E) interaction with recent major life events is not significant, our results suggest that trauma has a worse effect on depressive symptoms for those with S/S or S/L genotype than for those who do not carry the S allele (P<0.05). We find no evidence that this G×E interaction varies by sex. Conclusions: Previous studies of this G×E interaction have been inconclusive, perhaps because interactions between genotype and stressful events are more prominent under extreme stressors. Our findings underscore the need to move beyond a bi‐allelic parameterization of the 5‐HTTLPR polymorphism and raise questions about why East Asian populations exhibit low rates of depression despite a high frequency of the S allele. Depression and Anxiety, 2010. © 2010 Wiley‐Liss, Inc.
  • Publisher: Hoboken: Wiley Subscription Services, Inc., A Wiley Company
  • Language: English
  • Identifier: ISSN: 1091-4269
    EISSN: 1520-6394
    DOI: 10.1002/da.20660
    PMID: 20196101
  • Source: MEDLINE
    Alma/SFX Local Collection
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