Immediate Release (IR) to Sustained Release (SR) Switching Study: Study of Switching From IR Seroquel to SR Seroquel in Outpatients With Schizophrenia - Full Text View

Sponsored by:	AstraZeneca
Information provided by:	AstraZeneca
ClinicalTrials.gov Identifier:	NCT00206128

Purpose

The purpose of this study is to determine that the efficacy of the sustained release (SR) formulation of quetiapine (Seroquel) is not inferior to the immediate release (IR) formulation.

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

Condition	Intervention	Phase
Schizophrenia	Drug: Seroquel SR	Phase III

MedlinePlus related topics: Schizophrenia

Drug Information available for: Quetiapine Quetiapine fumarate

U.S. FDA Resources

Study Type:	Interventional
Study Design:	Treatment, Randomized, Double-Blind, Dose Comparison, Parallel Assignment, Safety/Efficacy Study
Official Title:	6-Week Multicenter, Double-Blind, Randomized, Parallel-Group, Phase 3 Study to Evaluate the Feasibility of Switching From Immediate-Release Quetiapine Fumarate (SEROQUEL) to Sustained-Release Quetiapine Fumarate in Outpatients With Schizophrenia (Abbreviated)

Further study details as provided by AstraZeneca:

Primary Outcome Measures:

The proportion of patients who discontinue study treatment due to lack of efficacy or whose positive and negative syndrome scale (PANSS) total score increases 20% or more [ Time Frame: from randomisation to any visit ] [ Designated as safety issue: No ]

Secondary Outcome Measures:

The change in PANSS total score [ Time Frame: from randomization to week 6 ] [ Designated as safety issue: No ]
The change in PANSS positive, negative and general psychopathology symptoms subscale scores respectively [ Time Frame: from randomization to week 6 ] [ Designated as safety issue: No ]
The proportion of patients with a Clinical Global Impressions - Improvement (CGI-I) score greater than or equal to 4 [ Time Frame: at week 6 ] [ Designated as safety issue: No ]

Enrollment:	454
Study Start Date:	November 2004
Study Completion Date:	March 2006
Primary Completion Date:	February 2006 (Final data collection date for primary outcome measure)

Eligibility

Ages Eligible for Study:	18 Years to 65 Years
Genders Eligible for Study:	Both
Accepts Healthy Volunteers:	No

Criteria

Inclusion Criteria:

A stable dose of quetiapine IR between 300 and 800 mg/day within 4 weeks prior to the enrolment visit (Visit 1) as judged by the investigator.
Female patients of childbearing potential must have a negative serum pregnancy test at enrolment and be willing to use a reliable method of birth control, ie, barrier method, oral contraceptive, implant, dermal contraception, long-term injectable contraceptive, intrauterine device, or tubal ligation during the study.
Able to understand and comply with the requirements of the study, as judged by the investigator.

Exclusion Criteria:

Meeting the criteria for any other (than schizophrenia) Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM-IV) Axis I diagnosis, concomitant organic mental disorder or mental retardation.
Patients with substance abuse or dependence, as defined by DSM-IV, and not in full remission. A urine drug screen test will be performed. The investigator will evaluate the results along with medical history to determine if the patient meets DSM-IV criteria for substance abuse or dependence.
Risk of transmitting human immunodeficiency virus (HIV) or hepatitis B, via blood or other body fluids, as judged by the investigator.
Patients who, in the opinion of the investigator, pose an imminent risk of suicide or a danger to self or others.

Contacts and Locations

Please refer to this study by its ClinicalTrials.gov identifier: NCT00206128

Show 69 Study Locations

Sponsors and Collaborators

AstraZeneca

Investigators

Study Director:

AstraZeneca Seroquel Medical Science Director, MD

AstraZeneca

More Information

Study ID Numbers:	D1444C00146
Study First Received:	September 13, 2005
Last Updated:	December 18, 2008
ClinicalTrials.gov Identifier:	NCT00206128
Health Authority:	United States: Food and Drug Administration

Keywords provided by AstraZeneca:

Schizophrenia

Study placed in the following topic categories:

Schizophrenia
Quetiapine
Mental Disorders
Psychotic Disorders
Schizophrenia and Disorders with Psychotic Features

Additional relevant MeSH terms:

Tranquilizing Agents
Therapeutic Uses
Physiological Effects of Drugs
Psychotropic Drugs

Central Nervous System Depressants
Antipsychotic Agents
Central Nervous System Agents
Pharmacologic Actions

ClinicalTrials.gov processed this record on January 16, 2009