No Effect of Serotoninergic Gene Variants on Response to Interpersonal Counseling and Antidepressants in Major Depression

Overview

Journal Psychiatry Investig

Specialty Psychiatry

Date 2013 Jun 27

PMID 23798967

Citations 7

Authors

Alessandro Serretti

Chiara Fabbri

Silvia Pellegrini

Stefano Porcelli

Pierluigi Politi

Silvio Bellino

Marco Menchetti

Veronica Mariotti

Cristina Demi

Valentina Martinelli

Marco Cappucciati

Paola Bozzatello

Elena Brignolo

Paolo Brambilla

Chi-Un Pae

Matteo Balestrieri

Diana De Ronchi

Affiliations

Soon will be listed here.

Abstract

Objective: Gene variants within the serotonin pathway have been associated with major depressive disorder (MDD) treatment outcomes, however a possible different modulation on pharmacological or psychological treatments has never been investigated.

Methods: One hundred sixty MDD patients were partially randomized to either inter-personal counseling (IPC) or antidepressants. The primary outcome was remission at week 8. Five serotonergic polymorphisms were investigated (COMT rs4680, HTR1A rs6295, HTR2A rs2224721, HTR2A rs7997012 and SLC6A4 rs421417).

Results: IPC (n=43) and antidepressant (n=117) treated patients did not show any difference in remission rates at week 8 (corrected for baseline severity, age and center). None of the studied gene variants impacted on response and remission rates at week 8 neither in the IPC nor in the antidepressant group. An analysis of the whole sample showed a trend of association between rs7997012 AA genotype and a better treatment outcome.

Conclusion: Our study confirms that IPC is an effective psychological intervention comparable to antidepressants in mild-moderate MDD. Polymorphisms related to the serotonin system did not exert a major effect on clinical outcomes in none of the treatment groups.

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