SPECT Investigation Of The NMDA Receptor System In Healthy Volunteers And Patients With Schizophrenia

January 7, 2016 updated by: GlaxoSmithKline

Investigation of the NMDA Receptor System in Man as a Potential Surrogate Marker for Deficit Syndrome in Schizophrenia: a [123]I-CNS 1261 Single Photon Emission Tomography (SPET) Study

This study was designed to compare the [123]I-CNS 1261 binding to NMDA receptor between healthy volunteers and different subgroups of schizophrenic patients. Investigation of the potential influence of antipsychotic and concomitant medication on [123I] CNS 1261 binding is also relevant.Fifteen healthy subjects (male and female of non-child bearing potential) will be recruited and 40 schizophrenic patients divided in 3 subgroups as indicated before: Subgroup a) treatment-naive, (n=10); Subgroup b) on stable treatment with risperidone (without criteria of deficit syndrome on the SDS scale, (n=15);Subgroup c) on stable treatment with risperidone fitting criteria of deficit syndrome on the SDS scale, (n=15).

Study Overview

Status

Terminated

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

55

Phase

  • Phase 1

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

  • Spain
      • Barcelona, Spain
        • GSK Investigational Site

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 45 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion criteria:

  • Right-handed
  • Smoker
  • Healthy volunteer or schizophrenic patients as diagnosed by DSM IV criteria.
  • Treatment naive patients or with Risperidone treatment for 2 months that have not received any depot neuroleptic during the last year.
  • Women of childbearing potential must agree to acceptable method of birth control.

Exclusion criteria:

  • Any clinically or laboratory significant abnormality.
  • Subjects receiving a radiation dose from other activities of more than 10 mSv over any 3 year period.
  • Heart pacemaker, metallic prosthesis or other metallic body implants.
  • History or presence of CNS conditions.
  • History of substance dependence.
  • History of or suffers from claustrophobia.
  • Positive test for HBV (hepatitis B virus), HCV (hepatitis C virus) or HIV.
  • Pregnant or lactating women.

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

  • Primary Purpose: Diagnostic
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
CNS (Central Nervous System) 1261 binding differences in healthy volunteers and 3 different predefined subgroups of schizophrenic patients and in the 3 different subgroups of schizophrenic patients.
Time Frame: throughout the study
throughout the study

Secondary Outcome Measures

Outcome Measure
Time Frame
Effect of treatment with risperidone and lorazepam in inducing changes on [123]I CNS 1261 binding, and its relationship with the plasma concentration of administered drugs and with Psychopathological scales scores.
Time Frame: throughout the study
throughout the study

Collaborators and Investigators

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

Sponsor

GlaxoSmithKline

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

July 1, 2005

Primary Completion (Actual)

July 1, 2005

Study Completion (Actual)

July 1, 2005

Study Registration Dates

First Submitted

August 11, 2006

First Submitted That Met QC Criteria

August 11, 2006

First Posted (Estimate)

August 15, 2006

Study Record Updates

Last Update Posted (Estimate)

January 11, 2016

Last Update Submitted That Met QC Criteria

January 7, 2016

Last Verified

January 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 102747

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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