Journal
CLINICAL PSYCHOLOGICAL SCIENCE
Volume 4, Issue 1, Pages 17-27Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/2167702615577470
Keywords
CD38; social anxiety; depression; trait-state-occasion modeling; interpersonal stress; gene-environment interaction; oxytocin
Categories
Funding
- National Institute of Mental Health [R01MH065651, R01MH065652]
- training fellowship in Biobehavioral Issues in Physical and Mental Health at University of California, Los Angeles [T32MH15750]
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Variation in the CD38 gene, which regulates secretion of the neuropeptide oxytocin, has been associated with several social phenotypes. Specifically, rs3796863 A allele carriers have demonstrated increased social sensitivity. In 400 older adolescents, we used trait-state-occasion modeling to investigate how rs3796863 genotype, baseline ratings of chronic interpersonal stress, and their gene-environment (GxE) interaction predicted trait social anxiety and depression symptoms over 6 years. We found significant GxE effects for CD38 A-carrier genotypes and chronic interpersonal stress at baseline predicting greater social anxiety and depression symptoms. A significant GxE effect of smaller magnitude was also found for C/C genotype and chronic interpersonal stress predicting greater depression; however, this effect was small compared with the main effect of chronic interpersonal stress. Thus, in the context of chronic interpersonal stress, heightened social sensitivity associated with the rs3796863 A allele may prospectively predict risk for social anxiety and (to a lesser extent) depression.
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