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Efficacy & Safety of Seroquel Plus Mood Stabilizer in the Maintenance of Bipolar I Disorder

A Multicenter, Randomized, Parallel-Group, Double-Blind, Phase 3 Comparison of the Efficacy & Safety of Quetiapine Fumarate to Placebo When Used as Adjunct to Mood Stabilizers (Lithium or Valproate) in the Maintenance Treatment of Bipolar I Disorder in Adult Patients (Abbreviated)

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00107731
Enrollment
710
Registered
2005-04-08
Start date
2004-04-30
Completion date
2006-10-31
Last updated
2009-03-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bipolar I Disorder

Keywords

Bipolar I Disorder, Manic Depressive Disorder, Manic Depression

Brief summary

The purpose of this study is to determine whether quetiapine when used as adjunct to lithium or divalproex is safe and effective in the maintenance treatment of adult patients with Bipolar I Disorder. The study consists of enrollment and 2 phases, the Open-label treatment Phase and the Randomized treatment Phase. PLEASE NOTE: Seroquel SR and Seroquel XR refer to the same formulation. The SR designation was changed to XR after consultation with FDA.

Interventions

DRUGquetiapine fumarate
DRUGlithium

Sponsors

AstraZeneca
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* A diagnosis of Bipolar I Disorder, Most recent episode Manic (296.4x), or Bipolar I Disorder, Most Recent Episode Depressed (296.5x), or Bipolar I Disorder, Most recent Episode Mixed (296.6x), with or without psychotic features, as defined by Diagnostic and Statistical Manual of Mental Disorders - Fourth Edition (DSM-IV) * At least 1 manic, depressed, or mixed episode in the 2 years prior to the index episode. * Able to understand and comply with the requirements of the study.

Exclusion criteria

* Diagnosis of an anxiety disorder as defined by DSM-IV, which was treated with medication within the past year. * Known intolerance or lack of response to quetiapine fumarate or to the assigned mood stabilizer, as judged by the investigator. * Previously randomized into this study or D1447C00126

Design outcomes

Primary

MeasureTime frame
Evaluate the efficacy of quetiapine versus placebo when used as adjunct therapy to mood stabilizer in increasing time to recurrence of a mood event.

Secondary

MeasureTime frame
Evaluate the efficacy of quetiapine versus placebo when used as a adjunct therapy to mod stabilizer in increasing time to recurrence of a manic event

Countries

Australia, Belgium, Bulgaria, Czechia, Finland, France, Germany, Hungary, Italy, Norway, Poland, Russia, South Africa, Spain, Sweden, Turkey (Türkiye), United Kingdom, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 23, 2026