Serotonin transporter polymorphisms and side effects in antidepressant therapy--a pilot study

Pharmacogenomics
Johannes PoppWerner Steimer

Abstract

To assess the influence of the serotonin transporter variable number of tandem repeat (HTT-VNTR) polymorphism and the serotonin transporter-gene-linked polymorphic region (HTTLPR) polymorphism on development of side effects under antidepressant therapy. A total of 109 depressive in-patients treated with various antidepressants according to local clinical practice were included in the investigation. Four weeks after admission to hospital, side effects were assessed by using a modified version of the dosage record and treatment emergent symptoms scale (DOTES). Differences in side effects between the genotype groups of both polymorphisms were analyzed using the Fisher's exact test. A total of 65 patients received mirtazapine (25 of them in combination with other antidepressants), and 44 patients were predominantly treated with antidepressants acting via HTT, such as selective serotonin re-uptake inhibitors (SSRIs) and tricyclic antidepressants (TCAs). When patients were treated with HTT-blocking antidepressants, a significantly higher occurrence of side effects in patients with the HTTVNTR 2.10/2.10 genotype (52.6%) than in patients with the 2.10/2.12 (12.5%) and 2.12/2.12 (0%) genotypes (p = 0.004) was found. With regard to the H...Continue Reading

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Citations

May 29, 2009·International Clinical Psychopharmacology·Anna SecherErling Mellerup
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Methods Mentioned

BETA
electrophoresis
genotyping
pharmacotherapy

Software Mentioned

SPSS

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