Try the modernized beta website. Learn more about the modernization effort.
Working… Menu

Efficacy and Safety of SR58611A in Patients With Major Depressive Disorder (ORION)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00252356
Recruitment Status : Completed
First Posted : November 11, 2005
Last Update Posted : March 12, 2009
Information provided by:

Brief Summary:
To evaluate the efficacy of a fixed dose of SR58611A(350 mg q12) compared to placebo in patients with MajorDepressive Disorder (MDD) using escitalopram (10 mgqd) as positive control. The study is a multicenter, US and Canadian, randomized, double-blind, 3-parallel-group, placebo- and escitalopram-controlled, Phase III study consisting of four segments (A, B, C and D). Segment A is a 1-week, placebo, single-blind period. Segment B is an 8-week, double-blind period. Segment C is an optional 18-week double-blind extension period. Segment D is a 1-week safety follow-up period after study drug discontinuation or early termination (during Segment B or C).

Condition or disease Intervention/treatment Phase
Major Depressive Disorder Drug: SR58611A Phase 3

Detailed Description:
To evaluate the efficacy of a fixed dose of SR58611A(350 mg q12) compared to placebo in patients with MajorDepressive Disorder (MDD) using escitalopram (10 mgqd) as positive control. The present study is an 8-week, double-blind, placebo- and escitalopram-controlled, randomized, parallel-group study. A 1-week, placebo, single-blind period precedes the 8-week randomized treatment period and an optional 18-week, double-blind extension period follows the randomized treatment period. A Safety Follow up Visit is scheduled 1 week after the acute and extension period, or early termination. Escitalopram, a selective serotonin reuptake inhibitor (SSRI), an approved treatment for MDD, is chosen as a positive control agent in this study. The dose of 10 mg is within the approved dose range with no need for dose adjustment in elderly patients. This trial is designed to formally compare the efficacy, safety, and tolerability of SR58611A to placebo. Escitalopram is used as a positive control.

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 468 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: An Eight-Week, Double-Blind, Placebo Controlled, Multicenter Study With Escitalopram (10 mg qd) as Positive Control, Evaluating the Efficacy, Safety, Tolerability of a Fixed Dose of SR58611A (350 mg q12) in Outpatients With MDD
Study Start Date : September 2005
Actual Primary Completion Date : January 2007
Actual Study Completion Date : May 2007

Resource links provided by the National Library of Medicine

Primary Outcome Measures :
  1. 17-item Hamilton Depression Rating Scale (HAM-D) total score

Secondary Outcome Measures :
  1. Change from baseline in Clinical Global Impression (CGI) and MADRS Severity of Illness score
  2. Safety assessments

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

Main inclusion criteria:

  • 1. Out-patients, 18 year and older.
  • 2. Major Depressive Disorder (MDD) with a recurrentMajor Depressive Episode (MDE) according to DSMIV-TR criteria
  • 3. Duration of current episode is at least of 6 weeksunless severity of symptoms justifies shorter duration.
  • 4. Patients have been treated or hospitalized for aprevious episode, or a previous episode requiredantidepressant treatment(s) at the recommended doselevel for a continuous total duration of at least 2months.

Exclusion Criteria:

Main exclusion criteria:

  • 1. Patients at immediate risk for suicidal behavior
  • 2. Patients with a MDE with psychotic features, catatonic features, seasonal pattern or postpartum onset
  • 3. The duration of the current depressive episode is greater than 2 years
  • 4. Patients whose current depressive episode is secondary to a general medical condition
  • 5. Patients with a lifetime history of (1) bipolar disorder, (2) psychotic disorder, (3) antisocial personality disorder
  • 6. Patients who have received non-pharmacologic, somatic treatments for psychiatric disease
  • 7. Patients who have initiated, stopped, or changed the frequency or nature of psychotherapy within 3 months prior to screening

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00252356

Layout table for location information
United States, New Jersey
Sanofi-Aventis Administrative Office
Bridgewater, New Jersey, United States, 08807
Sanofi-Aventis Administrative Office
Laval, Canada
Sponsors and Collaborators
Layout table for investigator information
Study Director: ICD CSD Sanofi
Additional Information:
Layout table for additonal information
Responsible Party: ICD Study Director, sanofi-aventis Identifier: NCT00252356    
Other Study ID Numbers: EFC5041
First Posted: November 11, 2005    Key Record Dates
Last Update Posted: March 12, 2009
Last Verified: March 2009
Keywords provided by Sanofi:
major depressive disorder
major depressive episode
antidepressive agents
Additional relevant MeSH terms:
Layout table for MeSH terms
Depressive Disorder
Depressive Disorder, Major
Mood Disorders
Mental Disorders
Behavioral Symptoms
Adrenergic beta-Agonists
Adrenergic Agonists
Adrenergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs