Clinical trial Recruiting at 1 site Phase 2 Interventional Ages 18 and up Women only

Using PET imaging to evaluate estrogen receptor activity in uterine cancer

Official title: [18F]FLUOROESTRADIOL (FES) PET/CT IMAGING OF THE ESTROGEN RECEPTOR IN PATIENTS WITH METASTATIC OR RECURRENT UTERINE CANCER

Run by Abramson Cancer Center at Penn Medicine · NCT05916196 · Data updated 2026-11-12

This study is testing a special type of imaging to see how well estrogen receptors are working in women with recurrent or advanced uterine cancer to help guide their treatment.

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexWomen only
Enrollment30 (estimated)
SponsorAbramson Cancer Center at Penn Medicine
Academic / other
Locations1 site (Philadelphia, Pennsylvania)
StatusRecruiting
StartedApril 5, 2024
Main results expectedAugust 1, 2027
Study endsAugust 1, 2028
Registry record updatedJune 5, 2026
Trial IDNCT05916196 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are women aged 18 and older with recurrent or metastatic uterine cancer that has not been treated with surgery.

Probably not a fit

Patients who are pregnant or those who have recently discontinued certain hormone therapies may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This phase II clinical trial investigates the use of [18F]fluoroestradiol (FES) PET/CT imaging to assess estrogen receptor activity in women with recurrent or metastatic uterine cancer. Eligible participants will undergo FES PET/CT scans to evaluate disease progression and response to therapy, with imaging conducted before starting new treatment or at suspected disease progression. The study aims to enroll up to 30 women who meet specific eligibility criteria, ensuring a thorough evaluation of the imaging technique's effectiveness in guiding treatment decisions.

Why it matters

Potential benefit: If successful, this study could enhance the ability to tailor treatments for uterine cancer based on estrogen receptor activity, potentially improving patient outcomes.

How similar studies have gone: Other studies utilizing PET imaging for cancer evaluation have shown promise, suggesting that this approach may be beneficial, though this specific application is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria

1. Participants will be ≥ 18 years of age
2. Recurrent or metastatic or intact non-operated uterine cancer not treated with surgery that is biopsy-proven or demonstrated on other standard of care imaging (e.g. CT, FDG PET/CT, MRI, bone scan, x-ray, ultrasound)
3. At least one lesion outside the liver detected by standard of care imaging (e.g.CT, FDG PET/CT, MRI, bone scan, x-ray, ultrasound)
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.
5. Subjects that are currently on or have recently discontinued tamoxifen or fulvestrant would require an 8-week or 28-week, respectively, washout period prior to FES PET/CT scan.

Exclusion Criteria

1. Females who report they are pregnant at screening will not be eligible for this study. A urine pregnancy test will be performed in women of child-bearing potential prior to FES injection.
2. Inability to tolerate imaging procedures in the opinion of an investigator or treating physician
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

Where it's running

  • Abramson Cancer Center at University of Pennsylvania
    Philadelphia, Pennsylvania, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.