Clinical trialNCT00351169CompletedPhase 3Interventional

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

SponsorAstraZenecaEnrollment450Major Depressive Disorder

View the registry record on ClinicalTrials.gov

Summary

The registered summary isn't in our current data snapshot. Read it on the ClinicalTrials.gov record ↗. Why? →

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

Willie Earley, MD
AstraZeneca
Study Director
clinicaltrials.gov ↗

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

42 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

Canada

Research Site
Edmonton, Alberta, Canada
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Kelowna, British Columbia, Canada
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Penticton, British Columbia, Canada
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Vancouver, British Columbia, Canada
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St. John's, Newfoundland and Labrador, Canada
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Halifax, Nova Scotia, Canada
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Sydney, Nova Scotia, Canada
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Greater Sudbury, Ontario, Canada
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Hamilton, Ontario, Canada
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Oakville, Ontario, Canada
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Ottawa, Ontario, Canada
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Toronto, Ontario, Canada
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Gatineau, Quebec, Canada
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Montreal, Quebec, Canada

China

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Beijing, China
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HA Erbing, China
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Nanjing, China
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Shanghai, China
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Wuhan, China

Finland

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Helsinki, Finland
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Oulu, Finland
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Tampere, Finland
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Turku, Finland

Malaysia

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Johor Bahru, Malaysia
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Perak, Malaysia
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Petaling Jaya, Malaysia

Mexico

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Aguascalientes, Mexico
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Distrito Federal, Mexico
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Guadalajara, Mexico

Philippines

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Cebu City, Philippines
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Davao City, Philippines
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Mandaluyong, Philippines
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Manila, Philippines

South Africa

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Benoni, South Africa
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Cape Town, South Africa
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Durban, South Africa
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Johannesburg, South Africa
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Krugersdorp, South Africa

South Korea

Research Site
Seoul, South Korea

Spain

Research Site
Langreo, Spain

2 more sites on the registry record.ClinicalTrials.gov ↗

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

No drug or biological interventions are in our data for this study — it may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start: 31 May 2006
Primary completion: —
Completion: 30 Jun 2007
Last update posted: 22 Dec 2008
Registered enrollment: 450
Registry id: NCT00351169

clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 12 Jul 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.