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Agomelatine in the treatment of depressive disorders in clinical practice: multicenter observational CHRONOS study

Authors Ivanov SV, Samushiya MA

Received 10 December 2013

Accepted for publication 3 March 2014

Published 17 April 2014 Volume 2014:10 Pages 631—639

DOI https://doi.org/10.2147/NDT.S58994

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Stanislav V Ivanov, Marina A Samushiya

Department of “Borderline” Mental Pathology and Psychosomatic Disorders, Mental Health Research Center of the Russian Academy of Medical Science, Moscow, Russian Federation

Background: CHRONOS was a large naturalistic study designed to evaluate the effectiveness and safety of agomelatine in the management of patients with major depression in routine clinical practice.
Methods: Patients (n=6,276) with a moderate or severe major depressive episode without psychotic symptoms were treated initially as outpatients (80.2%) or in psychiatric facilities (19.8%) in 54 regions of the Russian Federation. Patients received a flexible-dosing regimen of agomelatine 25 mg or 50 mg once daily for 8 weeks, with frequent study visits (weeks 1, 2, 3, 4, 6, and 8).
Results: Patients (mean age 44 years, 72.6% female) showed progressive improvement on the 17-item Hamilton Rating Scale for Depression (HAMD-17) total score from 22±6.9 at baseline to 4.7±4.7 at week 8 (P<0.0001). The proportion of responders (HAMD-17 decrease of ≥50%) was 90.1% and the proportion of remitters (HAMD-17 <7) was 79.1% at week 8. All individual HAMD-17 item scores improved rapidly, and the change relative to baseline was significant (P<0.0001) at week 1 and at each subsequent visit in all cases. There were corresponding rapid improvements in Clinical Global Impression Severity and Improvement scores. In the subgroup of patients with more severe illness (HAMD-17 ≥21 at baseline; n=3,478), the proportions of responders and remitters were 92.4% and 72.8%, respectively, at week 8.
Conclusion: Agomelatine was effective and well tolerated in a large sample of depressed patients in an observational treatment setting, and showed a rapid onset of benefit across all HAMD-17 items.

Keywords: agomelatine, antidepressant, Hamilton Rating Scale for Depression, major depressive disorder, observational study


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