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NCT00326144 · ClinicalTrials.gov registry record · Phase 3

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

A Phase 3 study, sponsored by AstraZeneca.

Completed
Registry status
Phase 3
Development phase
310
Enrollment target

NCT00326144: Completed Phase 3 study, sponsored by AstraZeneca.

NCT00326144 is a Phase 3 study that has completed, run by AstraZeneca. The registered enrollment target is 310 participants, below the 772-participant average among 15,282 other Phase 3 trials with a reported enrollment target (60% lower). According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT00326144, a Phase 3 study, has completed, sponsored by AstraZeneca.

COMPLETED
Registry status
Phase 3
Development phase
310 participants
Enrollment target

Study Summary

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.

Interventions

  • DRUG Quetiapine fumarate

Trial Details

FieldValue
Enrollment Target 310 participants
Start Date 2006-04
Est. Completion 2007-05
Phase Phase 3
AstraZeneca

1,285 total trials

What the finished NCT00326144 record still lists

NCT00326144 is an interventional study that assigns participants to a tested intervention. The registered 310 participants enrollment target is mid-sized for trials with a published cap, below the 772-participant average among 15,282 other Phase 3 trials with a reported enrollment target (60% lower).

The record links to 0 conditions, and to 1 intervention - of which Quetiapine fumarate is the first listed.

NCT00326144 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT00326144 about?

NCT00326144 is a clinical study titled "Efficacy and Safety of Quetiapine Fumarate Sustained Release (SEROQUEL SR) in the Treatment of Major Depressive Disorders". 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 designatio...

What is the current status of trial NCT00326144?

This trial is currently completed. It is a Phase 3 study. The enrollment target is 310 participants. The study started on 2006-04. Estimated completion is 2007-05.

What interventions are being tested in trial NCT00326144?

The interventions under investigation include: Quetiapine fumarate (DRUG).

Who is sponsoring clinical trial NCT00326144?

This trial is sponsored by AstraZeneca, which has 1,285 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT00326144's enrollment target sits among peer trials

310 1107th of 2000 higher than 892 of 2,000 other Phase 3 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 3 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

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Source: ClinicalTrials.gov NCT00326144, the US trial registry maintained by the National Library of Medicine. NCT00326144 (mid enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.