- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03254342
MRS and Medication Response: A Pilot Study
Magnetic Resonance Spectroscopy and Medication Response: A Pilot Study
Study Overview
Status
Detailed Description
The primary objective of this study is to demonstrate that it is feasible to image paroxetine (Paxil) or citalopram (Celexa) or escitalopram (Lexapro) brain concentrations using MRS technology in depressed patients.
The longer-term goal is to determine the relationship between clinically administered doses of paroxetine (Paxil) or citalopram (Celexa) or escitalopram (Lexapro) (antidepressants), the amount of drug in the body via blood level, the concentrations of the drug achieved in brain measured via MRS, and genetics.
It has been previously reported that individuals taking 20mg of paroxetine daily had brain paroxetine [(Paxil) levels via MRS ranging from 2-13 micromolar. Similar or slightly higher ranges of brain drug concentrations have been reported for fluoxetine and fluvoxamine.
Since not all depressed patients respond to medications, one reason may be the amount of medication that crosses the blood-brain barrier. This may be influenced by genetic information. We want to examine these issues on a larger scale, but first we need to demonstrate that we can indeed determine paroxetine [(Paxil) or citalopram (Celexa) or escitalopram (Lexapro)] levels via MRS.
Intended results analysis could not be conducted because a reliably sensitive spectroscopic method could not be developed.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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California
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Stanford, California, United States, 94305
- Stanford University Psychiatry and Biobehavioral Sciences
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Major depressive disorder:
Inclusion Criteria:
- DSM diagnosis of Major Depressive Disorder
- Taking paroxetine [(Paxil) or citalopram (Celexa) or escitalopram (Lexapro)]for at least 6 weeks
- Between 21 - 75 years of age.
- Taking a stable dose of paroxetine [(Paxil) or citalopram (Celexa) or escitalopram (Lexapro)] for at least the 2 weeks prior to the imaging session
Healthy controls:
- Between 21 - 75 years of age.
- Have a 21-item HAM-D score of less than or equal to 5.
- No current, or history of any Axis I disorder.
Identify exclusion criteria.
Exclusion criteria are as follows:
- Contraindications for an MRI exam. These includes biomedical devices such as pacemakers, aneurysm clips, prostheses, and other metallic objects embedded in the body such as bullets, buckshot, shrapnel, and any metal fragments from working around metal.
- Current pregnancy or lactation.
- Patients with claustrophobia.
- History, or current Axis I or Axis II disorders
- Active unstable medical problems, as confirmed by screening procedures
- Diagnosed with any autoimmune disease, (e.g., rheumatoid arthritis, Lupus, MLS).
- Chronic use of steroids or opiates.
- Positive urine toxicology screen for illicit substances of abuse.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
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Major depressive disorder
There is no intervention/treatment in this study.
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Non-depressed individuals
There is no intervention/treatment in this study.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Measurement of paroxetine (Paxil), citalopram (Celexa) or escitalopram (Lexapro) brain concentrations.
Time Frame: Within 7 Days following MRS
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Measurement of paroxetine (Paxil), citalopram (Celexa) or escitalopram (Lexapro) brain concentrations using MRS technology in depressed participants.
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Within 7 Days following MRS
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Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 28162
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
IPD Sharing Supporting Information Type
- STUDY_PROTOCOL
- ICF
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
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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