Effects of Gene Polymorphisms on Metabolic Features in Clozapine-treated Patients With Schizophrenia

March 25, 2011 updated by: Taipei Medical University WanFang Hospital
The investigators would like to know the association of gene polymorphisms and metabolic adversities in clozapine-treated patients with schizophrenia in Taiwan.

Study Overview

Status

Unknown

Conditions

Detailed Description

The atypical antipsychotics, such as olanzapine, risperidone, quetiapine, and ziprasidone, are effective in treating both the positive and negative symptoms in schizophrenia (Kelleher et al., 2002). However, atypical antipsychotics have been linked to several forms of morbidity, including obesity, hyperlipidemia, and type 2 diabetes mellitus (DM) (Bergman and Ader, 2005; Jin et al., 2004; Melkersson and Dahl, 2004). Compared with the general population, life expectancy in schizophrenic patients is shorter by as much as 20%, attributable to higher rates of suicide, accidental deaths, and natural causes such as cardiovascular disease and DM (Harris and Barraclough, 1998). Several studies have suggested that these metabolic abnormalities may lead to a greater vulnerability to cardiovascular disease and thus may contribute to the excessive mortality among schizophrenic patients.

Study Type

Observational

Enrollment (Anticipated)

80

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Taiwan
      • Taipei, Taiwan
        • Recruiting
        • Taipei Medical University-WanFang Hospital
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

schizophrenia or schizoaffective disorder patients

Description

Inclusion Criteria:

  • fulfilled DSM-IV criteria of schizophrenia or schizoaffective disorder
  • 18-65 year of age
  • receiving clozapine for at least 6 months

Exclusion Criteria:

  • diabetes mellitus patients

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Taipei Medical University WanFang Hospital

Investigators

  • Principal Investigator: Chun-Hsin Chen, MD, Taipei Medical University WanFang Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

May 1, 2010

Study Completion (Anticipated)

April 1, 2011

Study Registration Dates

First Submitted

March 24, 2011

First Submitted That Met QC Criteria

March 25, 2011

First Posted (Estimate)

March 28, 2011

Study Record Updates

Last Update Posted (Estimate)

March 28, 2011

Last Update Submitted That Met QC Criteria

March 25, 2011

Last Verified

March 1, 2011

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 99037

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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