Positron Emission Tomography (PET) Imaging of Glial Activation in Psychotic Disease States

September 8, 2020 updated by: Johns Hopkins University

PET Imaging of Glial Activation in Psychotic Disease States

Many neurological diseases, including AIDS dementia, Alzheimer's disease and schizophrenia, involve an inflammatory component thought to specifically involve glial cell activation. The Investigators has been concerned with the development of tools for noninvasive imaging of inflammatory processes in psychotic disease. Here, the investigators aim to use PET-based neuroimaging with carbon-11 N,N-diethyl-2-(4-methoxyphenyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidine-3-acetamide, ([11C]DPA)-713 to quantify regional distribution of translocator protein (TSPO), a putative marker of inflammation, in the brains of patients with schizophrenia and bipolar disorder, type I. The investigators will focus on patients in the early stages of disease (within first five years of onset of schizophrenia diagnosis and within first five years of first manis, respectively) to minimize the confounds of age-, chronic illness-, and medication- effects on our results.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
35

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • 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

  • United States
    • Maryland
      • Baltimore, Maryland, United States, 21287
        • Johns Hopkins University

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • healthy volunteers 18-65 years of age
  • Patients diagnosed with recent onset schizophrenia (within 5 years of onset), 18-65 years of age
  • Patients diagnosed with recent onset bipolar disorder (within 5 years of onset of first mania), 18-65 years of age
  • screening laboratory tests will be obtained for subjects within a 10 day period prior to the PET study and the results must be within normal limits for gender and age. These tests will be repeated with a 7-day window following the PET study
  • EKG conducted within 10 day period prior to the PET study. The EKG will be repeated within 7 days following the study.
  • Subject agrees to return to the Hospital for a follow-up EKG and laboratory testing of blood and urine.
  • For females of childbearing potential, negative serum pregnancy test within a 10 day period prior to PET study.

Exclusion Criteria:

  • history of recent nosocomial infection,
  • history of chronic neurological disorder, such as multiple sclerosis or epilepsy, or structural,central nervous system (CNS) abnormality such as stroke or arteriovenous malformation,
  • history of head injury with loss of consciousness > 1 hour,
  • history of active substance abuse as defined by substance abuse including alcohol abuse over the 6 months prior to the study,
  • dependence on benzodiazepine medication
  • contraindications to MRI scanning to include pacemakers, metallic implants/prosthesis or prohibitive claustrophobia, etc.
  • contraindications to PET scanning to include pregnancy, etc. For females of childbearing potential, negative serum pregnancy test less than 10 days prior to PET study
  • ECG demonstrating the patient is not in a sinus rhythm or is having acute ischemia.
  • any medical condition that in the opinion of the study investigators would constitute a safety risk to the subject.

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)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Patients with Schizophrenia Disorder
Patients with Schizophrenia Disorder will be imaged with [11C] DPA-713
Drug: [11C]DPA-713
[11C]DPA-713 PET imaging
Experimental: Patients with Bipolar Disorder
Patients with Bipolar Disorder will be imaged with [11C] DPA-713
Drug: [11C]DPA-713
[11C]DPA-713 PET imaging
Experimental: Control
Normal volunteers will be imaged with [11C] DPA-713
Drug: [11C]DPA-713
[11C]DPA-713 PET imaging

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Sensitivity and Specificity of ([11C]DPA)-713 PET brain imaging in patients with recent onset schizophrenia and in patients with recent onset of mania
Time Frame: within five years of onset of schizophrenia or within five years of first manic episode
To determine regional brain uptake of this radioligand in patients with recent onset schizophrenia and in patients with recent onset of mania
within five years of onset of schizophrenia or within five years of first manic episode

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
PET Imaging of microglial activation
Time Frame: 5 years
To evaluate changes in activation of microglia in patients with acute schizophrenia and bipolar disorder relative to controls
5 years

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Johns Hopkins University

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Martin Pomper, MD,PhD, Professor

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

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 1, 2010

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 1, 2018

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
April 1, 2018

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 15, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 18, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 22, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 10, 2020

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 8, 2020

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
October 1, 2018

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • NA_00037683

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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