ArticleJournal of mood and anxiety disorders2023
Predicting anxiety-related personality traits by means of serotonergic VNTR variants STin2 and 5-HTTLPR.
Article in Journal of mood and anxiety disorders, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Polymorphisms of the serotonergic system are amongst the most commonly investigated genetic variants with respect to anxiety-related personality traits and affective disorders. Mostly the prominent 5-HTTLPR, a functional VNTR in the 5-HTT promoter region, is intensively analysed but effect sizes in meta-analyses are small and results are inconsistent. We reinvestigated the association of 5-HTTLPR with harm avoidance (HA) and neuroticism taking another functional 5-HTT-VNTR (STin2) into account, as both VNTRs have transcription regulating properties and research points to combinatorial effects on transcription efficacy. N = 2969 participants, among them 447 inpatients suffering from affective disorders, were genotyped and filled in the TCI, NEO-FFI personality inventories besides the CLEq measuring the extent of experienced stressful life events. Significant main effects for the 5-HTTLPR with inpatients carrying the L+ allele having lower HA scores as well as for the STin2 with healthy controls carrying at least one STin2.12R allele having lower neuroticism scores were observed. Besides no gene-interaction occurred. However, specific haplotype effects were observed in healthy participants as well as in the total sample. More specifically, the 12/L variant was associated with significant lower HA and neuroticism scores. Results highlight the multifactorial interplay of 5-HTT genetic variants and the use of haplotypes in association studies on anxiety-related personality traits with impact on affective disorders.
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