Using FFNP PET/MRI to predict response to hormonal therapy in endometrial conditions

18-fluorofuranylnorprogesterone (FFNP) Positron Emission Tomography-Magnetic Resonance Imaging (PET/MRI) as a Potential Biomarker of Response to Progesterone Therapy in Complex Atypical Hyperplasia (CAH) and Grade 1 Endometrial Cancer (EC)

Phase 2 Interventional UNC Lineberger Comprehensive Cancer Center · NCT05483023

This study is trying to see if a special type of scan can help predict how well women with certain endometrial conditions will respond to a hormonal treatment using an intrauterine device.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment8 (estimated)
Ages18 Years and up
SexFemale
SponsorUNC Lineberger Comprehensive Cancer Center Academic / other
Locations1 site (Chapel Hill, North Carolina)
Trial IDNCT05483023 on ClinicalTrials.gov

What this trial studies

This study evaluates the effectiveness of 18-fluorofuranylnorprogesterone (FFNP) PET/MRI as a biomarker for predicting how well patients with Complex Atypical Hyperplasia (CAH) or Grade 1 Endometrial Cancer (EC) will respond to treatment with a levonorgestrel-releasing intrauterine device (LR-IUD). It is a prospective, single-arm pilot study involving eight women who have been diagnosed with these conditions and are scheduled to receive the LR-IUD. Participants will undergo one FFNP PET/MRI scan, and their medical records will be monitored for six months to assess treatment outcomes.

Who should consider this trial

Good fit: Ideal candidates for this study are women aged 18 or older with histologically confirmed CAH or Grade 1 EC who have not undergone prior surgical or hormonal treatments.

Not a fit: Patients with severe claustrophobia, certain medical conditions, or those who are pregnant will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a non-invasive method to predict treatment responses, potentially improving patient outcomes in CAH and EC.

How similar studies have performed: While this approach is novel, similar imaging techniques have shown promise in other cancer types, suggesting potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Female age 18 or older
* Histologically confirmed CAH or Grade 1 EC
* No prior surgical or hormonal treatment for CAH or Grade 1 EC
* Planned treatment with levonorgestrel-releasing intrauterine device (LR-IUD) for CAH or grade 1 EC

Exclusion Criteria:

* Inability to complete PET/MR scans due to severe claustrophobia
* Institutionalized subject (prisoner or nursing home subject)
* Implanted metallic devices, parts, vascular clips, or other foreign bodies.
* Known hypersensitivity to gadolinium or FFNP or to any component of gadolinium or FFNP refractory to standard medications (antihistamines, steroids)
* Impaired kidney function (serum creatinine level \> 1.8 mg/dl or a glomerular filtration rate \< 60 as approximated using serum creatinine levels) unless anuric and on dialysis.
* Any woman who is pregnant or has reason to believe she is pregnant (the possibility of pregnancy has to be excluded by negative urine (β-HCG) results, obtained within 24 hours before FFNP administration, or on the basis of patient history)
* Prior hormone treatment for breast cancer

Where this trial is running

Chapel Hill, North Carolina

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 Complex Atypical HyperplasiaEndometrial Cancer
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.