Efficacy and Safety of Quetiapine Fumarate Sustained Release (SEROQUEL SR) in the Treatment of Major Depressive Disorders

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The purpose of this study is to demonstrate superior efficacy of Quetiapine fumarate sustained release (SEROQUEL) compared with placebo when used as a mono-therapy in the treatment of Major Depressive Disorders PLEASE NOTE: Seroquel SR and Seroquel XR refer to the same formulation. The SR designation was changed to XR after consultation with FDA...

Brief Summary

Official Title: “A Multicenter, Double-Blind, Randomized, Parallel-Group, Placebo-Controlled Phase III Study of the Efficacy and Safety of Quetiapine Fumarate Sustained Release (Seroquel SRĀ®) as Mono-Therapy in the Treatment of Adult Patients With Major Depressive Disorder”

The purpose of this study is to demonstrate superior efficacy of Quetiapine fumarate sustained release (SEROQUEL) compared with placebo when used as a mono-therapy in the treatment of Major Depressive Disorders PLEASE NOTE: Seroquel SR and Seroquel XR refer to the same formulation. The SR designation was changed to XR after consultation with FDA.

  • Study Type: Interventional
  • Study Design: Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Treatment

Intervention(s) in this Clinical Trial

  • Drug: Quetiapine fumarate

Outcome Measures for this Clinical Trial

Primary Measures

  • To evaluate the efficacy of Quetiapine SR compared with placebo in the treatment of patients with MDD as assessed by change from randomization to Week 8 in the MADRS total score

Secondary Measures

  • To evaluate if Quetiapine SR improves the health-related quality of life of patients with MDD, compared to placebo
  • To evaluate if quetiapine SR reduces anxiety symptoms in patients with MDD, compared to placebo

Criteria for Participation in this Clinical Trial

Inclusion Criteria:

  • Patient is able to provide written informed consent before beginning any study related procedures
  • Patient has a documented clinical diagnosis of major depressive disorder
  • Patient is able to understand and comply with the requirements of the study, as judged by a study investigator

Exclusion Criteria:

  • Patients with a history of non-compliance as judged by the study investigator
  • Patients with a known lack of response to previous treatment with quetiapine
  • Patients who have participated in a clinical trial within 4 weeks of randomization

Gender Eligibility for this Clinical Trial: Both

Minimum Age for this Clinical Trial: 18 Years

Maximum Age for this Clinical Trial: 65 Years

Are Healthy Volunteers Accepted for this Clinical Trial?: No

Clinical Trial Investigator Information

Lead Investigator: AstraZeneca Industry

Overall Clinical Trial Officials and Contacts

Seroquel Medical Science Director, MD Study Director AstraZeneca  

Additional Information

Information obtained from ClinicalTrials.gov on February 09, 2012

Link to the current ClinicalTrials.gov record. http://clinicaltrials.gov/show/NCT00326144

Study ID Number: D1448C00003

ClinicalTrials.gov Identifier: NCT00326144

Health Authority: United States: Food and Drug Administration

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The URL of this page is:
http://clinicaltrialsfeeds.org/clinical-trials/show/NCT00326144