HealthyPhase 1NCT00083629
Use of [18F]FECNT in Positron Emission Tomography
A Phase 1 study testing PET in people with Healthy, run by National Institute of Mental Health (NIMH) at 1 site in United States.
Trial summary
This study will examine the use of a new radioactive tracer called [18F]FECNT in positron emission tomography (PET) scanning for measuring dopamine transporter (DAT) in the brain. DAT is found in brain neurons (nerve cells) that release the chemical messenger dopamine. Read more about this study
- Who is it for?
- Any ageHealthy volunteers can take part
- Conditions the study is for
- Healthy
- What is being tested?
- PET
- Type of treatment
- Surgery or procedure
- How many people
- 30 participants
- Where
- 1 siteUnited States
- Study dates
- May 2004to Sep 2005
- Phase
- Phase 1
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- Healthy volunteers accepted
- Child, Adult, Older adult
Who may be able to join
- Healthy subjects ages 18-65
Who cannot join
- Current diagnosis of psychiatric disease, substance dependence or severe systemic disease.
- History of substance abuse within 6 months.
- Abnormal laboratory tests.
- Prior participation in other research protocols within the past year such that a radiation exposure together with the present study would exceed the annual limits.
- Pregnancy and breast feeding.
- HIV positive.
Show all 14Show fewer
- Current diagnosis of psychiatric disease, substance dependence or severe systemic disease.
- History of substance abuse within 6 months.
- Abnormal laboratory tests.
- Novocain allergy.
- Prior participation in other research protocols within the past year such that a radiation exposure together with the present study would exceed the annual limits.
- Any condition that increases increase risk for MRI (e.g., pacemaker, metallic foreign body in the eye).
- Pregnancy and breast feeding.
- HIV positive.
Trial locations and contacts
1 site in 1 country.
United States1 site
National Institute of Mental Health (NIMH)
Bethesda, Maryland, 20892
About this study
Official title: PET Whole Body Biodistribution and Test Retest Brain Imaging Studies Using a Dopamine Transporter Ligand [18F]FECNT
This study will examine the use of a new radioactive tracer called [18F]FECNT in positron emission tomography (PET) scanning for measuring dopamine transporter (DAT) in the brain. DAT is found in brain neurons (nerve cells) that release the chemical messenger dopamine. By taking pictures of the DAT, scientists hope to learn more about the function of these neurons.
Normal, healthy volunteers between 18 and 65 years of age may be eligible for this study. Candidates are screened with a medical history and physical examination, psychological assessment, and blood and urine tests.
Read more
Subjects enrolled in the study participate in one of the following procedures:
Brain Imaging Study: Part 1
Two catheters (small plastic tubes) are placed into veins in the subject's arms for injecting [18F]FECNT and for collecting blood samples during the scan. A third catheter is placed into a wrist artery to obtain arterial blood during the scan. With the catheters in place, the subject lies down on the scanner bed with his or her head placed in a special mask that limits movement during the brain scan. The scan begins with an initial x-ray like picture for about 10 minutes, after which the [18F]FECNT is injected and the actual PET scan starts. The entire procedure takes about 6 hours, including 2 hours of continuous scanning sessions, during which the subject is required to lie still. Subjects can relax out of the scanner between scans. They are monitored throughout the procedure. Vital signs are measured and electrocardiogram is taken once before and twice after injection of the tracer. At the end of the scanning, additional blood and urine samples are collected. Subjects are asked to urinate every 2 hours to lessen the radioactivity in the body.
Whole Body Imaging Study: Part 2
For this procedure, a catheter is placed in a vein for injecting the [18F]FECNT tracer. A total of five scans are taken, each one spanning from head to upper thigh. During the course of the scans, x-ray like pictures are obtained. The first scan takes about 100 minutes. Four additional 1-hour scans are done every 100 minutes. The total time for the scans is about 6 hours, and the total time for the entire procedure is about 9 hours. About 2 tablespoons of blood are drawn by needle stick at one time during the imaging. Subjects can leave the PET scanner between scans. They are asked to urinate every 2 hours for 6 hours from the time of tracer injection and to collect all the urine so that radioactivity can be measured.
Brain Imaging Study: Part 3
Part 3 of the study is the same as Part 1, except that two PET procedures are done on separate days, the second within 4 weeks of the first. In addition, participants may also under magnetic resonance imaging (MRI) scanning, a test that uses magnetic fields and radio waves to obtain pictures of the brain.
Read the detailed description
The dopamine system plays important roles in various neurological and psychiatric disorders such as Parkinson's disease, schizophrenia, mood disorders, and attention-deficit hyperactivity disorder. Several positron emission tomography (PET) and single photon emission computed topography (SPECT) tracers have been developed including [11C]CFT and [123I]beta-CIT. These tracers have been successfully applied in patients, particularly to stage those with Parkinson's disease. However, these tracers lack selectivity among monoamine (dopamine, serotonin, and norepinephrine) transporters. Recently a new PET tracer, [18F]FECNT brain uptake and washout has been developed, which has high selectivity and affinity to the dopamine transporter (DAT). Part 1 of this study will measure the kinetics of [18F]FECNT brain uptake and washout. Part 2 will estimate radiation-absorbed doses in healthy human subjects by performing whole body PET imaging studies. Part 3 will assess the reliability of measuring DAT densities in the brain by performing a test retest brain PET studies in healthy human subjects. The results of this overall study are required to apply this tracer in various neurological and psychiatric disorders in the future.
- Conditions
- Healthy
- Being tested
- PET
- Keywords
- [18F]FECNT, Biodistribution, Dosimetry, Dopamine Transporter, MIRD, Kinetic Analysis, Compartment Analysis, Healthy Volunteer, HV
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PETProcedure or surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 May 2004 (estimated)
- Study startMay 2004
- Study completionSep 2005
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for HealthyStudies of the same condition, open and under way.
- More trials run by National Institute of Mental Health (NIMH)The sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Treatment
- Enrolment
- 30 participants
Sponsor and investigators
- Lead sponsor
- National Institute of Mental Health (NIMH)
- Sponsor type
- US National Institutes of Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00083629
- Sponsor's protocol ID
- 040204
- Other IDs
- 04-M-0204
- Status last verified
- Sep 2005
- First submitted
- 27 May 2004
- Last updated
- 4 Mar 2008
- Results posted
- No
Publications
Abi-Dargham A, Gandelman M, Zoghbi SS, Laruelle M, Baldwin RM, Randall P, Zea-Ponce Y, Charney DS, Hoffer PB, Innis RB. Reproducibility of SPECT measurement of benzodiazepine receptors in human brain with iodine-123-iomazenil. J Nucl Med. 1995 Feb;36(2):167-75.
PubMed 7830108Barrio JR, Huang SC, Melega WP, Yu DC, Hoffman JM, Schneider JS, Satyamurthy N, Mazziotta JC, Phelps ME. 6-[18F]fluoro-L-dopa probes dopamine turnover rates in central dopaminergic structures. J Neurosci Res. 1990 Dec;27(4):487-93. doi: 10.1002/jnr.490270408.
PubMed 2127807Cloutier RJ, Smith SA, Watson EE, Snyder WS, Warner GG. Dose to the fetus from radionuclides in the bladder. Health Phys. 1973 Aug;25(2):147-61. doi: 10.1097/00004032-197308000-00009. No abstract available.
PubMed 4784245
Study at a glance
From the registry record, last updated by the sponsor on 4 Mar 2008. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- PET Whole Body Biodistribution and Test Retest Brain Imaging Studies Using a Dopamine Transporter Ligand [18F]FECNT
- ClinicalTrials.gov ID
- NCT00083629
- Acronym / sponsor ID
- 040204
- Conditions
- Healthy
- Keywords
- [18F]FECNT, Biodistribution, Dosimetry, Dopamine Transporter, MIRD, Kinetic Analysis, Compartment Analysis, Healthy Volunteer
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 30 participants
- Lead sponsor
- National Institute of Mental Health (NIMH)US National Institutes of Health
- Study start
- May 2004
- Study completion
- Sep 2005
- First posted
- 27 May 2004 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study will examine the use of a new radioactive tracer called [18F]FECNT in positron emission tomography (PET) scanning for measuring dopamine transporter (DAT) in the brain. DAT is found in brain neurons (nerve cells) that release the chemical messenger dopamine. By taking pictures of the DAT, scientists hope to learn more about the function of these neurons.
Normal, healthy volunteers between 18 and 65 years of age may be eligible for this study. Candidates are screened with a medical history and physical examination, psychological assessment, and blood and urine tests.
Subjects enrolled in the study participate in one of the following procedures:
Brain Imaging Study: Part 1
Two catheters (small plastic tubes) are placed into veins in the subject's arms for injecting [18F]FECNT and for collecting blood samples during the scan. A third catheter is placed into a wrist artery to obtain arterial blood during the scan. With the catheters in place, the subject lies down on the scanner bed with his or her head placed in a special mask that limits movement during the brain scan. The scan begins with an initial x-ray like picture for about 10 minutes, after which the [18F]FECNT is injected and the actual PET scan starts. The entire procedure takes about 6 hours, including 2 hours of continuous scanning sessions, during which the subject is required to lie still. Subjects can relax out of the scanner between scans. They are monitored throughout the procedure. Vital signs are measured and electrocardiogram is taken once before and twice after injection of the tracer. At the end of the scanning, additional blood and urine samples are collected. Subjects are asked to urinate every 2 hours to lessen the radioactivity in the body.
Whole Body Imaging Study: Part 2
For this procedure, a catheter is placed in a vein for injecting the [18F]FECNT tracer. A total of five scans are taken, each one spanning from head to upper thigh. During the course of the scans, x-ray like pictures are obtained. The first scan takes about 100 minutes. Four additional 1-hour scans are done every 100 minutes. The total time for the scans is about 6 hours, and the total time for the entire procedure is about 9 hours. About 2 tablespoons of blood are drawn by needle stick at one time during the imaging. Subjects can leave the PET scanner between scans. They are asked to urinate every 2 hours for 6 hours from the time of tracer injection and to collect all the urine so that radioactivity can be measured.
Brain Imaging Study: Part 3
Part 3 of the study is the same as Part 1, except that two PET procedures are done on separate days, the second within 4 weeks of the first. In addition, participants may also under magnetic resonance imaging (MRI) scanning, a test that uses magnetic fields and radio waves to obtain pictures of the brain.
Detailed description
The dopamine system plays important roles in various neurological and psychiatric disorders such as Parkinson's disease, schizophrenia, mood disorders, and attention-deficit hyperactivity disorder. Several positron emission tomography (PET) and single photon emission computed topography (SPECT) tracers have been developed including [11C]CFT and [123I]beta-CIT. These tracers have been successfully applied in patients, particularly to stage those with Parkinson's disease. However, these tracers lack selectivity among monoamine (dopamine, serotonin, and norepinephrine) transporters. Recently a new PET tracer, [18F]FECNT brain uptake and washout has been developed, which has high selectivity and affinity to the dopamine transporter (DAT). Part 1 of this study will measure the kinetics of [18F]FECNT brain uptake and washout. Part 2 will estimate radiation-absorbed doses in healthy human subjects by performing whole body PET imaging studies. Part 3 will assess the reliability of measuring DAT densities in the brain by performing a test retest brain PET studies in healthy human subjects. The results of this overall study are required to apply this tracer in various neurological and psychiatric disorders in the future.
Study design
- Primary purpose
- Treatment
Who may qualify
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (1 listed)
- Healthy subjects ages 18-65
Key exclusion criteria (14 listed)
- Current diagnosis of psychiatric disease, substance dependence or severe systemic disease.
- History of substance abuse within 6 months.
- Abnormal laboratory tests.
- Prior participation in other research protocols within the past year such that a radiation exposure together with the present study would exceed the annual limits.
- Pregnancy and breast feeding.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| PET | Procedure or surgery | – |
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Mar 2008.
- Background: PubMed 7830108Abi-Dargham A, Gandelman M, Zoghbi SS, Laruelle M, Baldwin RM, Randall P, Zea-Ponce Y, Charney DS, Hoffer PB, Innis RB. Reproducibility of SPECT measurement of benzodiazepine receptors in human brain with iodine-123-iomazenil. J Nucl Med. 1995 Feb;36(2):167-75.
- Background: PubMed 2127807Barrio JR, Huang SC, Melega WP, Yu DC, Hoffman JM, Schneider JS, Satyamurthy N, Mazziotta JC, Phelps ME. 6-[18F]fluoro-L-dopa probes dopamine turnover rates in central dopaminergic structures. J Neurosci Res. 1990 Dec;27(4):487-93. doi: 10.1002/jnr.490270408.
- Background: PubMed 4784245Cloutier RJ, Smith SA, Watson EE, Snyder WS, Warner GG. Dose to the fetus from radionuclides in the bladder. Health Phys. 1973 Aug;25(2):147-61. doi: 10.1097/00004032-197308000-00009. No abstract available.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing PET in people with Healthy, run by National Institute of Mental Health (NIMH) at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 14 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 4 Mar 2008. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00083629, which also lists 3 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Mar 2008.