This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

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

This study has been completed.
Information provided by:
Sanofi Identifier:
First received: November 10, 2005
Last updated: March 10, 2009
Last verified: March 2009
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 Intervention Phase
Major Depressive Disorder Drug: SR58611A Phase 3

Study Type: Interventional
Study Design: 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

Further study details as provided by Sanofi:

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

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

Enrollment: 468
Study Start Date: September 2005
Study Completion Date: May 2007
Primary Completion Date: January 2007 (Final data collection date for primary outcome measure)
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.

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
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
  Contacts and Locations
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, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00252356

United States, New Jersey
Sanofi-Aventis Administrative Office
Bridgewater, New Jersey, United States, 08807
Sanofi-Aventis Administrative Office
Laval, Canada
Sponsors and Collaborators
Study Director: ICD CSD Sanofi
  More Information

Additional Information:
Responsible Party: ICD Study Director, sanofi-aventis Identifier: NCT00252356     History of Changes
Other Study ID Numbers: EFC5041
Study First Received: November 10, 2005
Last Updated: March 10, 2009

Keywords provided by Sanofi:
major depressive disorder
major depressive episode
antidepressive agents

Additional relevant 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 processed this record on August 23, 2017