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Autonomic Peripheral Nervous System DiseasesEarly Phase 1NCT02385877

Clinical Translation of 18F-Labeled Hydroxyphenethylguanidines

A Early Phase 1 study testing [18F]4F-MHPG and [18F]3F-PHPG in people with Autonomic Peripheral Nervous System Diseases, run by University of Michigan at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to perform first-in-human PET imaging studies of two new cardiac sympathetic nerve imaging agents, 4-[18F]fluoro-meta-hydroxyphenethylguanidine ([18F]4F-MHPG) and 3-[18F]fluoro-para-hydroxyphenethylguanidine ([18F]3F-PHPG). Read more about this study

Who is it for?
Ages 18 to 55 yearsHealthy volunteers can take part
What is being tested?
[18F]4F-MHPG and [18F]3F-PHPG
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
16 participants
Where
1 siteUnited States
Study dates
Mar 2015to Aug 2016
Phase
Early 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 18 to 55 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Non-obese (BMI < 30)
  • Normal blood pressure
  • Normal blood lipid profile
  • No history of prior cardiovascular disease
  • Not susceptible to claustrophobia
  • Ability to lay flat for 90 min

Who cannot join

  • Obesity (BMI > 30)
  • Risk factors for heart disease (age > 55y, hypertension, smoking, high blood pressure, high cholesterol levels, diabetes, etc.)
  • History of heart disease (heart attack, atrial fibrillation, ventricular tachycardia, exertional angina)
  • Currently using certain medications that may interact with cardiac nerves (antidepressants, cold medications, nasal decongestants, monoamine oxidase inhibitors, etc.)
  • Claustrophobia
  • Inability to lie flat for 90 min
  • Pregnant or breast feeding

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Michigan

    Ann Arbor, Michigan, 48109

Other trials in United States

About this study

Official title: Clinical Translation of 18F-Labeled Hydroxyphenethylguanidines for Quantification of Regional Cardiac Sympathetic Nerve Density With PET

The purpose of this study is to perform first-in-human PET imaging studies of two new cardiac sympathetic nerve imaging agents, 4-[18F]fluoro-meta-hydroxyphenethylguanidine ([18F]4F-MHPG) and 3-[18F]fluoro-para-hydroxyphenethylguanidine ([18F]3F-PHPG).

Read the detailed description

In this study, PET imaging studies of two structurally related 18F-hydroxyphenethylguanidines, 4-[18F]fluoro-meta-hydroxyphenethylguanidine ([18F]4F-MHPG) and 3-[18F]fluoro-para-hydroxyphenethylguanidine ([18F]3F-PHPG) will be performed. All studies will be performed in normal healthy volunteers.

PET stands for Positron Emission Tomography which is a type of imaging that uses a radioactive tracer. This is also called a radiotracer which is a compound linked to a radioactive element. Most compounds are short-lived, meaning that the radioactivity breaks down quickly or is excreted from the body.

In the first stage of the study, dynamic PET imaging for 90 min will be done with [18F]4F-MHPG (n = 4) and [18F]3F-PHPG (n = 4).

Data from these studies will assess each radiotracer's imaging properties, pharmacokinetics and metabolic breakdown in plasma. Application of tracer kinetic analysis methods to the kinetics of each tracer in heart and plasma will be studied to see if these methods can provide accurate measurements of regional nerve sympathetic nerve density in the hearts of human subjects. Results from these initial studies will be used to select the lead compound for further studies in patient populations.

In the second stage of the study, whole-body PET imaging studies (n = 4) with the selected lead radiotracer will be performed to acquire data necessary for generating more accurate human radiation absorbed dose estimates.

Being tested
[18F]4F-MHPG, [18F]3F-PHPG
Medical subject headings
Autonomic Nervous System Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • [18F]4F-MHPGDrug

    Also called 4-[18F]fluoro-meta-hydroxyphenethylguanidine

    IV injection of [18F]4F-MHPG

  • [18F]3F-PHPGDrug

    Also called 3-[18F]fluoro-para-hydroxyphenethylguanidine

    IV injection of [18F]3F-PHPG

Study groups in NCT02385877
Study groupRoleWhat they receive
Protocol 1: [18F]4F-MHPGExperimentalSubjects (n = 4) will be injected one time with 6.5 mCi of 4-[18F]fluoro-meta-hydroxyphenethylguanidine ([18F]4F-MHPG) and receive a 90 minute PET scan.
Receives: Drug: [18F]4F-MHPG
Protocol 1: [18F]3F-PHPGExperimentalSubjects (n = 4) will be injected one time with 6.5 mCi of 3-[18F]fluoro-para-hydroxyphenethylguanidine ([18F]3F-PHPG) and receive a 90 minute PET scan.
Receives: Drug: [18F]3F-PHPG
Protocol 2: Biodistribution StudiesExperimentalSubjects (n = 4) will be injected one time with 6.5 mCi of either [18F]4F-MHPG or [18F]3F-PHPG (whichever is selected based on Protocol 1 studies) and receive four whole-body PET scans, starting at 5 min, 60 min, 150 min and 360 min after tracer injection.
Receives: Drug: [18F]4F-MHPG; Drug: [18F]3F-PHPG

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Composite measure based on radiotracer tissue uptake ratios (heart-to-lung ratio, heart-to-liver ratio, heart-to-blood ratio) and rates of metabolism in plasma (half-time, in minutes) of [18F]4F-MHPG and [18F]3F-PHPG in healthy subjects.

    These data will be used to select the lead radiotracer for further clinical development.

    Measured: 3 months

Secondary outcomes (2)
  1. Radiation Dose

    Human radiation absorbed dose estimates based on the kinetics of the selected lead radiotracer in various organs, as extracted from whole-body PET scans.

    Measured: 1 year

  2. Number of Adverse Events

    Number of study participants with adverse events as a measure of safety and tolerability following intravenous administration of [18F]4F-MHPG or [18F]3F-PHPG

    Measured: 30 days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 Mar 2015 (estimated)
  2. Study startMar 2015
  3. Primary completionAug 2016
  4. Study completionAug 2016

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Early Phase 1
Primary purpose
Diagnosis
Allocation
Non-randomised
Intervention model
Single group
Masking
None (open label)
Enrolment
16 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02385877
Sponsor's protocol ID
HUM00088601
Status last verified
Jun 2017
First submitted
25 Feb 2015
Last updated
2 Jul 2017
Results posted
No
Data monitoring committee
No
Individual data sharing
No

Publications

  • Raffel DM, Jung YW, Koeppe RA, Jang KS, Gu G, Scott PJH, Murthy VL, Rothley J, Frey KA. First-in-Human Studies of [18F] Fluorohydroxyphenethylguanidines. Circ Cardiovasc Imaging. 2018 Dec;11(12):e007965. doi: 10.1161/CIRCIMAGING.118.007965.

    PubMed 30558502

Questions about this trial

What is this clinical trial studying?

A Early Phase 1 study testing [18F]4F-MHPG and [18F]3F-PHPG in people with Autonomic Peripheral Nervous System Diseases, run by University of Michigan 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 6 inclusion and 7 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 2 Jul 2017. 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?

Early Phase 1 (sometimes called Phase 0) studies give a very small amount of a treatment to a few people, mainly to see how the body handles it.

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.

What does the primary outcome measure?

Composite measure based on radiotracer tissue uptake ratios (heart-to-lung ratio, heart-to-liver ratio, heart-to-blood ratio) and rates of metabolism in plasma (half-time, in minutes) of [18F]4F-MHPG and [18F]3F-PHPG in healthy subjects. (time frame: 3 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02385877, which also lists 1 linked publication.

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 2 Jul 2017.

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