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Completed

NCT Number: NCT00351910

Efficacy of Seroquel SR in Combination With an Antidepressant in Treatment of Major Depressive Disorder

To evaluate the efficacy of quetiapine fumarate sustained release (Seroquel SR™) in combination with an antidepressant versus an antidepressant alone in patients with Major Depressive Disorder.

PLEASE NOTE: Seroquel SR and Seroquel XR refer to the same formulation. The SR designation was changed to XR after consultation with FDA.

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Key information

Conditions

Major Depressive Disorder Depressive Disorder Depressive Disorder, Major Mental Disorders Mood Disorders

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Research Site, Everton Park, Queensland, Australia

Loading trial locations.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Male or female aged 18 to 65 years
  • A documented diagnosis of major depressive disorder

Exclusion criteria

  • Patients with a DSM IV Axis I disorder other than MDD within 6 months of enrolment
  • Patients with a diagnosis of DSM IV Axis II disorder which has a major impact on the patient's current psychiatric status
  • Patients whose current episode of depression exceeds 12 months or is less than 4 weeks prior to enrolment

Treatment and study plan

Quetiapine

Drug

Amitriptyline

Drug

bupropion

Drug

Citalopram

Drug

Duloxetine

Drug

Escitalopram

Drug

Fluoxetine

Drug

paroxetine

Drug

Sertraline

Drug

Venlafaxine

Drug

Primary outcomes

  1. To evaluate the efficacy of quetiapine fumarate sustained release

  2. (Seroquel SR™) in combination with an antidepressant versus an antidepressant alone in patients with Major Depressive Disorder.

Secondary outcomes

  1. If quetiapine SR in combination with an antidepressant improves health-related quality of life of patients with MDD, compared to an antidepressant alone.

Sponsors and collaborators

Lead sponsor

AstraZeneca

Industry

Registry information

Official study title

A Multi-Centre, Double-Blind, Randomised, Parallel-Group, Placebo-Controlled Phase III Study of the Efficacy and Safety of Quetiapine Fumarate Sustained Release (Seroquel SRTM) in Combination With an Antidepressant in the Treatment of Patients With Major Depressive Disorder With Inadequate Response to an Antidepressant Treatment

Acronym: ONYX

Important dates

Study start
2006
Study completion
2007
First posted
Jul 13, 2006
Registry last updated
Jan 26, 2011

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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