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New imaging agent could light up rare tumors

NCT ID NCT05636540

Knowledge-focused Sponsor: Heather Wachtel Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This early-phase study is testing an investigational radioactive tracer called 18F-FluorThanatrace (FTT) for PET/CT scans in up to 30 people with pheochromocytoma or paraganglioma—rare tumors of the adrenal glands or nerve tissue. The tracer aims to measure a protein called PARP-1 in the tumors. Importantly, the scan results will not be used to guide treatment; this is purely an observational study to see if the tracer can effectively highlight these tumors.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
18F-FluorThanatrace ([18F]FTT) - an investigational radioactive tracer for PET/CT imaging
What this could lead to
If successful, this could lead to a new imaging method to better see and understand these rare tumors, potentially helping future treatment decisions.
What could go wrong
This is a very early, small study (30 people) that is purely observational—it won't change treatment. The tracer may not reliably highlight tumors, and results may not apply to all patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Early phase 1

The earliest testing in people: a first look at safety, in a very small group.

Participants

About 30 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jul 2023

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Participants will be ≥ 18 years of age. 2. Clinical diagnosis of pheochromocytoma or paraganglioma based on biochemical and imaging studies At least one lesion identified on standard of care imaging (e.g. CT, MRI, FDG or 68-Gallium dotatate, other PET/CT or MIBG). 3. Standard of care germline genetic testing performed for clinical purposes or participant's consent for germline genetic testing for research purposes. 4. Participants must be informed of the investigational nature of this study and be willing to provide written informed consent and participate in this study in accordance with institutional and federal guidelines prior to study-specific procedures. Exclusion Criteria: 1. Inability to tolerate imaging procedures in the opinion of an investigator or treating physician. 2. Females who are pregnant or breastfeeding will not be eligible for this study; a urine pregnancy test will be performed in women of child-bearing potential prior to FTT injection. 3. Any current medical condition, illness, or disorder as assessed by medical record review and/or self-reported that is considered by a physician investigator to be a condition that could compromise participant safety or successful participation in the study.

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Conditions

The condition(s) this trial relates to.

paraganglioma pheochromocytoma

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Paraganglioma Pheochromocytoma

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Abramson Cancer Center of the University of Pennsylvania

    RECRUITING

    Philadelphia, Pennsylvania, 19104, United States

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