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Ziprasidone Versus Olanzapine In The Treatment Of Schizophrenia.

This study has been completed.
Sponsor:
Information provided by:
Pfizer
ClinicalTrials.gov Identifier:
NCT00239109
First received: October 12, 2005
Last updated: March 17, 2008
Last verified: March 2008
History of Changes

October 12, 2005
March 17, 2008
April 2003
Not Provided
To estimate and compare the effects of ziprasidone vs olanzapine on body weight in the treatment of patients with schizophrenia.
To estimate and compare the effects of ziprasidone vs olanzapine on body weight (it will be measured with weight balances provided by Pfizer) in the treatment of patients with schizophrenia.
Complete list of historical versions of study NCT00239109 on ClinicalTrials.gov Archive Site
PANSS total score; change from baseline CGI severity; change from baseline CGI - Improvement PANSS negative subscale score; change from baseline DSM IV axis V Patient preference scale (PPS) Heath Utility Index Mark III BMI , Qaist Index
PANSS total score; change from baseline Clinical global impression severity; change from baseline CGI - Improvement PANSS negative subscale score; change from baseline Global function assessment scale (DSM IV axis V) Patient preference scale (PPS)
Not Provided
Not Provided
 
Ziprasidone Versus Olanzapine In The Treatment Of Schizophrenia.
Ziprasidone Versus Olanzapine In The Treatment Of Schizophrenia: A Six Months, Double Blind Randomized, Parallel Group Study.
  • Various studies suggest that patients treated with Olanzapine can experience a substantial weight gain, while no changes have been observed in patients treated with Ziprasidone. Negative consequences on lipid and glucose profiles have also been observed in patients treated with Olanzapine. Most of the available data belong to short-term studies. However, for most clinical trials the primary variable was an efficacy variable, and included the weight assessment as a secondary variable; they also lack a systematic monitoring of some variables that can play a role in weight gain, as the level of exercise, appetite increase, etc. and we have considered of importance their inclusion in this protocol. Previous studies did not assess visceral fat using widely standardized parameters as the waist index, which at certain levels is considered an indicator of the cardiovascular risk, or leptine, highly correlated to the body fat storage. We would like to fit the recently published American Diabetes Association, American Psychiatric Association, American Association of Clinical Endocrinologists and North American Association for the Study of Obesity Antipsychotic, obesity and diabetes mellitus consensus.22
  • Schizophrenic patients show a 4-fold probability to die as a consequence of cardiovascular problems compared to the normal population. The antipsychotic treatment can contribute to increase this risk favoring weight gain and the appearance of cardiovascular risk factors associated to obesity (blood hypertension, hyperlipidemia, type II Diabetes Mellitus). We intend to obtain a complete cardiovascular risk profile of patients, as well as its change during antipsychotic treatment, including primary cardiovascular risk factors in addition to the analysis of markers that have recently been linked to cardiovascular risk (as reactive protein C).
  • The study will evaluate the risk of hyperglycemia, insulin resistance and Diabetes Mellitus, and will investigate the association between glucose homeostasis abnormalities and weight gain in the treated patients. Likewise, adiponectine, secreted from adipocytes and a possible link between obesity and insulin resistance will be determined; recent studies show an adiponectine decrease in humans with insulin resistance and obesity; furthermore, prospective studies have shown these changes could predict a higher risk of DM development.
  • Changes have been introduced in the complete evaluation of the patient's metabolic and cardiovascular profiles with the advice, and under the coordination of endocrinologists after a complete review of the subject
Not Provided
Interventional
Phase 4
Allocation: Randomized
Endpoint Classification: Safety Study
Intervention Model: Parallel Assignment
Masking: Double-Blind
Primary Purpose: Treatment
Schizophrenia
  • Drug: Ziprasidone
  • Drug: Olanzapine
  • Procedure: Scales
  • Procedure: measures of the body (Weight...)
  • Procedure: Serum analysis
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Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
112
February 2007
Not Provided

Inclusion Criteria:

  • Patients with a primary diagnosis of schizophrenia using the DSM-IV-TR criteria
  • Patient's clinical condition should justify treatment initiation with a new antipsychotic drug.

Exclusion Criteria:

  • Patients at immediate risk of committing harm to self or others
  • Concurrent treatment with antipsychotic agents after randomization.
Both
18 Years to 70 Years
No
Contact information is only displayed when the study is recruiting subjects
Spain
 
NCT00239109
A1281064
Not Provided
Not Provided
Pfizer
Not Provided
Study Director: Pfizer CT.gov Call Center Pfizer
Pfizer
March 2008

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP