New scan may reveal radiation success in brain tumors
NCT ID NCT04689048
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study is testing a special imaging agent called 18F-fluciclovine to see if it can detect how well radiation therapy is working on large brain tumors that have spread from other cancers. About 20 adults with at least one untreated brain tumor larger than 2 cm will get PET/CT scans before, during, and after radiation. The goal is to see if this scan can help doctors tell sooner whether the treatment is effective.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 20 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2022
- Expected to finish
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Dec 2027
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Male or female, age ≥18 years 2. Performance status, Eastern Cooperative Oncology Group 0-2 3. Confirmed diagnosis of brain metastases with at least one untreated lesion \>2 cm in maximum diameter 4. Plan for SSRS per the treating team 5. For women of childbearing potential, a negative serum pregnancy test within 14 days of registration is required 6. For females of reproductive potential: use of highly effective contraception for at least 4 weeks prior to screening and agreement to use such a method during study participation and for an additional 1 week after post-treatment 18F-fluciclovine positron emission tomography/computerized tomography Exclusion Criteria: 1. Prior anaphylactic reaction to 18F-fluciclovine 2. Evidence of leptomeningeal disease 3. Prior whole-brain radiation therapy 4. Contraindication to MRI (e.g., due to safety reasons, such as presence of a pacemaker) 5. Females pregnant at the expected time of 18F-fluciclovine administration 6. Females who are expecting to be breastfeeding at the time of 18F-fluciclovine and unwilling to stop breast-feeding for 24 hours. Temporary cessation of breastfeeding 24 hours after the time of imaging is allowed 7. Major medical illness or psychiatric/cognitive impairments, which in the investigator's opinion, will prevent completion of protocol therapy and/or preclude informed consent
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Miami Cancer Institute
RECRUITINGMiami, Florida, 33176, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- A sharper MRI could reveal radiation sensitivity of brain tumors
- Expert tumor board may extend survival in brain metastases
- Can a new pill outsmart lung cancer in the brain?