Using 18F-Fluciclovine to Monitor Brain Metastases After Radiation Therapy

Characterization of Large Brain Metastases With 18F-Fluciclovine PET/CT Treated With Staged Stereotactic Radiosurgery

Phase 1 Interventional Baptist Health South Florida · NCT04689048

This study is testing a new imaging agent called 18F-fluciclovine to see if it can help track how well radiation therapy is working for people with large brain metastases.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment20 (estimated)
Ages18 Years and up
SexAll
SponsorBaptist Health South Florida Academic / other
Drugs / interventionsradiation
Locations1 site (Miami, Florida)
Trial IDNCT04689048 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the effectiveness of a new imaging agent, 18F-fluciclovine, in detecting responses to radiation therapy in patients with large brain metastases. The study aims to assess how well this imaging agent can visualize changes in untreated brain lesions over time following staged stereotactic radiosurgery. Participants will undergo imaging to evaluate the progression or response of their brain metastases, providing valuable insights into treatment efficacy.

Who should consider this trial

Good fit: Ideal candidates include adults aged 18 and older with confirmed brain metastases and at least one untreated lesion larger than 2 cm.

Not a fit: Patients with prior whole-brain radiation therapy or contraindications to MRI may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could improve the monitoring of treatment responses in patients with brain metastases, leading to better personalized treatment strategies.

How similar studies have performed: Other studies using advanced imaging techniques for monitoring brain metastases have shown promise, suggesting potential success for this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
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

Where this trial is running

Miami, Florida

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Brain Metastases, AdultBrain MetastasesBrain Cancerbrainbrain metastasesbrain metastases, adultbrain cancerStereotactic Radiosurgery
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.