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New PET scan agent could predict cancer therapy success, but trial never started

NCT ID NCT06922825

Diagnosis Sponsor: Eben Rosenthal Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 Results may not be published yet.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 This study
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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This pilot study aimed to test whether a radioactive imaging agent called 68Ga-FAPI-46 could predict how well solid tumor patients respond to antibody therapy. The plan was to give 50 participants an injection of the agent, then perform a PET/CT scan and compare it to standard MRI or CT scans. However, the trial was withdrawn before any patients were enrolled, so no results are available.

What this could mean

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

Active substance
68Ga-FAPI-46 (a radioactive imaging agent)
What this could lead to
If it had succeeded, this could have pointed toward a more accurate imaging method to predict how well antibody therapy works in solid tumor patients.
What could go wrong
This trial was withdrawn before enrolling anyone, so no data was collected. Even if it had run, it was a very early pilot study with only 50 participants, so results would have been preliminary and uncertain.

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.

Expected to start

Jan 2027

An estimate. Start dates often move.

Expected to finish

Sep 2032

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

19 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: * Age ≥ 19 years. * Biopsy confirmed diagnosis of solid tumor malignancy scheduled to undergo antibody-based therapy * Subjects diagnosed with any stage of disease who will undergo immunotherapy treatment. * Have acceptable kidney function and clinical lab values. Exclusion Criteria: * Myocardial infarction (MI); cerebrovascular accident (CVA); uncontrolled congestive heart failure (CHF); significant liver disease; or unstable angina within 6 months prior to enrollment * Females who are currently pregnant or breastfeeding * Severe renal disease or anuria * Inability to lie flat or remain still for the duration of the scan.

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Conditions

The condition(s) this trial relates to.

cancer neoplasm

As listed by the trial registrant

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

Cancer Malignancy Solid tumor cancer Solid tumor malignancy

Contacts and locations

Locations

  • Vanderbilt University Medical Center

    Nashville, Tennessee, 37232, United States

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