Long-term efficacy and safety of agomelatine in non-depressed out-patients with generalized anxiety disorder. A 26-week randomised double-blind placebo-controlled parallel group study following an open-label period of 16 weeks with agomelatine (25 mg/day with the possibility for blinded dose-adjustment to 50 mg/day)

ISRCTN ISRCTN38094599
DOI https://doi.org/10.1186/ISRCTN38094599
Clinical Trials Information System (CTIS) 2006-005674-47
Protocol serial number CL3-20098-050
Sponsor Institut de Recherches Internationales Servier (France)
Funder Institut de Recherches Internationales Servier (France)
Submission date
24/09/2007
Registration date
26/03/2008
Last edited
18/04/2018
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Mental and Behavioural Disorders
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Not provided at time of registration and not expected to be available in the future

Contact information

Prof Istvan Bitter
Scientific

Department of Psychiatry and Psychotherapy
Semmelweis University
Balassa u.6.
Budapest
1083
Hungary

Study information

Primary study designInterventional
Study designRandomised double-blind parallel-group placebo-controlled multi-centre phase III study
Secondary study designRandomised controlled trial
Study type Participant information sheet
Scientific titleLong-term efficacy and safety of agomelatine in non-depressed out-patients with Generalized Anxiety Disorder.A 26-week randomised double-blind placebo-controlled parallel group study following an open-label period of 16 weeks with agomelatine (25mg/day with the possibility for blinded dose-adjustment to 50mg/day).
Study objectivesTo assess the efficacy of agomelatine in the prevention of relapse in non-depressed out-patients with Generalized Anxiety Disorder (GAD) after an initial response to agomelatine.
Ethics approval(s)First ethics committee approval in Estonia (Tallin Medical Research Ethics Committee) on 16/08/2007 (ref: 1121)
Health condition(s) or problem(s) studiedGeneralized anxiety disorder
InterventionAgomelatine versus placebo
Intervention typeDrug
PhasePhase III
Drug / device / biological / vaccine name(s)Agomelatine
Primary outcome measure(s)

Time to relapse

Key secondary outcome measure(s)

1. Evaluation of anxiety (Hamilton rating scale for anxiety [HAM-A])
2. Safety

Completion date15/03/2010

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
SexAll
Target sample size at registration370
Key inclusion criteria1. Aged over 18 years
2. Out-patients of both genders
3. Fulfilling the Diagnostic and Statistical Manual of mental disorders fourth edition (DSM-IV) criteria for GAD
Key exclusion criteria1. Women of childbearing potential without effective contraception
2. Patients meeting DSM-IV-TR current diagnosis of psychiatric disorder other than GAD
3. Any clinically relevant abnormality detected during the physical examination, ECG or laboratory tests likely to interfere with the study conduct or evaluations
Date of first enrolment15/10/2007
Date of final enrolment15/03/2010

Locations

Countries of recruitment

  • Canada
  • Denmark
  • Estonia
  • Finland
  • Hungary
  • Sweden

Study participating centre

Department of Psychiatry and Psychotherapy
Budapest
1083
Hungary

Results and Publications

Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryAvailable on request
IPD sharing planThe datasets generated during and/or analysed during the current study will be available upon request from https://clinicaltrials.servier.com if a Marketing Authorisation has been granted after 1st January 2014.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 01/07/2012 Yes No
Basic results No No
Participant information sheet Participant information sheet 11/11/2025 11/11/2025 No Yes

Editorial Notes

18/04/2018: Internal review.
28/03/2018: Publication and dissemination plan and IPD sharing statement updated.
25/01/2018: Publication plan and IPD sharing statement added.
18/12/2017: results summary added.