Kahn Study; Investigation Of The Efficacy Of Ziprasidone Versus Olanzapine In The Management Of Recent-Onset Psychosis; A Flexible-Dose, Parallel Group, Double-Blind Study

NCT ID: NCT00145444

Last Updated: 2021-02-21

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

100 participants

Study Classification

INTERVENTIONAL

Study Start Date

2003-03-31

Study Completion Date

2005-11-30

Brief Summary

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This study intends to compare novel antipsychotics ziprasidone and olanzapine, to confirm the findings of an open study -where stable patients receiving olanzapine switched to ziprasidone- which showed maintenance of clinical effect with improvements in all domains of cognitive function at 6 weeks (Daniel, 1999). Direct comparison of the two agents in a well-controlled double-blind fashion will allow an evaluation of the effect on cognitive function in the short and long-term management of patients with recent-onset schizophrenia, schizoaffective and schizophreniform disorder.

Detailed Description

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Conditions

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Schizophrenia Psychotic Disorders

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Interventions

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olanzapine

Intervention Type DRUG

ziprasidone

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Duration of illness \< 5 years (according to DSM-IV and onset first psychotic episode); CGI severity score \> 4 (moderately ill)
* maximum exposure to antipsychotic treatment of =\< 16 weeks.

Exclusion Criteria

* Concurrent treatment with antipsychotic agents =\< 12 hours prior to randomization
* for depot agents a period of two weeks or one cycle, whichever is the longer, must occur between last administration and randomization
* Treatment with antidepressants or mood stabilizers =\< 7 days of randomization
* for MAOIs and moclobemide this period must =\< 2 weeks
* for fluoxetine =\< 5 weeks
Minimum Eligible Age

18 Years

Maximum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Pfizer's Upjohn has merged with Mylan to form Viatris Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Pfizer CT.gov Call Center

Role: STUDY_DIRECTOR

Pfizer

Locations

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Pfizer Investigational Site

Antwerp, , Belgium

Site Status

Pfizer Investigational Site

Duffel, , Belgium

Site Status

Pfizer Investigational Site

Kortenberg, , Belgium

Site Status

Pfizer Investigational Site

Ermelo, , Netherlands

Site Status

Pfizer Investigational Site

Groningen, , Netherlands

Site Status

Pfizer Investigational Site

Nijmegen, , Netherlands

Site Status

Pfizer Investigational Site

Utrecht, , Netherlands

Site Status

Countries

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Belgium Netherlands

References

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Grootens KP, van Veelen NM, Peuskens J, Sabbe BG, Thys E, Buitelaar JK, Verkes RJ, Kahn RS. Ziprasidone vs olanzapine in recent-onset schizophrenia and schizoaffective disorder: results of an 8-week double-blind randomized controlled trial. Schizophr Bull. 2011 Mar;37(2):352-61. doi: 10.1093/schbul/sbp037. Epub 2009 Jun 19.

Reference Type DERIVED
PMID: 19542525 (View on PubMed)

Related Links

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https://trialinfoemail.pfizer.com/pages/landing.aspx?StudyID=A1281006&StudyName=Kahn+Study

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Other Identifiers

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A1281006

Identifier Type: -

Identifier Source: org_study_id

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