← Back to Clinical Trials
Recruiting Phase 2 NCT06086704

NCT06086704 Study of 18F-FFNP Breast PET/MRI

◆ AI Clinical Summary
Plain-language summary for patients
Clinical Trial Summary
NCT ID NCT06086704
Status Recruiting
Phase Phase 2
Sponsor University of Wisconsin, Madison
Condition Breast Cancer
Study Type INTERVENTIONAL
Enrollment 53 participants
Start Date 2024-09-25
Primary Completion 2028-08-31

Eligibility & Interventions

Sex Female only
Min Age 18 Years
Max Age N/A
Study Type INTERVENTIONAL
Interventions
18F-fluorofuranylnorprogesteronePositron Emissions Tomography / Magnetic Resonance ImagingAnastrozole

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

In Phase 2, researchers evaluate early signs of effectiveness. You may be randomized to receive the active treatment or a comparator. Monitoring continues closely.

This trial targets 53 participants in total. It began in 2024-09-25 with a primary completion date of 2028-08-31.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

This clinical trial will investigate an estrogen-regulated parameter as an early measure of endocrine therapy response: progesterone receptor (PR) protein with a progestin-based radioligand, 18F-fluorofuranylnorprogesterone (18F-FFNP). The overall purpose of this research is to test the efficacy of 18F-FFNP PET/MRI for predicting response to presurgical endocrine therapy and to determine the quantitative reliability of 18F-FFNP breast PET/MRI in patients with newly diagnosed PR+ primary breast cancer.

Eligibility Criteria

Inclusion Criteria: * Postmenopausal status defined by either * prior bilateral oophorectomy * age greater than or equal to 60 years of age * age less than 60 years of age and amenorrheic for 12 or more months in the absence of prior chemotherapy, tamoxifen, toremifene or ovarian suppression and FSH and estradiol in the postmenopausal range per local normal range (Group 2 only) * Diagnosis of biopsy-proven invasive breast cancer measuring at least 1.0 cm in diameter by any imaging modality. Malignancy may be located within the breast, axilla (e.g. metastatic axillary lymph node), or both the breast and axilla * Biopsy-proven PR-positive invasive breast cancer * Definitive surgical excision of the primary tumor planned without neoadjuvant therapy; defined as therapy (chemotherapy, targeted therapy, radiation therapy or endocrine therapy) given to decrease the size of the tumor prior to planned surgery. (Group 2 only) Exclusion Criteria: * Inability or unwillingness to provide informed consent to the study * HER2-positive breast cancer, as defined by immunohistochemical staining 3+ OR positive by in situ hybridization (Group 2 only) * PR and Ki67 IHC slides or FFPE tissue blocks from clinical breast biopsy not available * Patients who have completed neoadjuvant chemotherapy, endocrine therapy, targeted therapy, surgical resection, or radiation for the current biopsy-proven malignancy (Group 2 only) * Patients who are planning to undergo anastrozole as standard of care neoadjuvant therapy * Patients who are currently taking aromatase inhibitors or ER antagonists (tamoxifen, raloxifene) * Patients with breast expanders * Patients who are pregnant or lactating * Patients with clinical contraindication for use of aromatase inhibitors (AI) while on study as determined by investigator (Group 2 only) * Patients with a contraindication to gadolinium-based contrast agents, including allergy or impaired renal function (per UW Health Guidelines) * Patients with a history of allergic reaction attributable to compounds of similar chemical or biologic composition to 18F-FFNP * Patients with history of allergic reaction to anastrozole (Group 2 only) * Patients in liver failure as judged by the patient's physician * Patients with standard contraindications to MRI (per UW Health Guidelines) * Patients requiring conscious sedation for imaging are not eligible; patients requiring mild, oral anxiolytics for the clinical MRI scan will be allowed to participate as long as the following criteria are met: * The patient has their own prescription for the medication * The informed consent process is conducted prior to the self-administration of the medication. * The patient comes to the research visit with a driver. * Patients unable to lie prone for 45 minutes for imaging

Contact & Investigator

Central Contact

Cancer Connect

✉ clinicaltrials@cancer.wisc.edu

📞 800-622-8922

Principal Investigator

Amy M Fowler, MD, PHD

PRINCIPAL INVESTIGATOR

UW Carbone Cancer Center

Frequently Asked Questions

Who can join the NCT06086704 clinical trial?

This trial is open to female participants only, aged 18 Years or older, studying Breast Cancer. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

What phase is the NCT06086704 trial and what does that mean for participants?

Phase 2 trials evaluate whether the treatment shows signs of effectiveness while continuing to monitor safety. More participants are enrolled than in Phase 1 to help refine the treatment protocol.

Is NCT06086704 currently recruiting?

Yes, NCT06086704 is actively recruiting participants. Contact the research team at clinicaltrials@cancer.wisc.edu for enrollment information.

Where is the NCT06086704 trial being conducted?

This trial is being conducted at Madison, United States.

Who is sponsoring the NCT06086704 clinical trial?

NCT06086704 is sponsored by University of Wisconsin, Madison. The principal investigator is Amy M Fowler, MD, PHD at UW Carbone Cancer Center. The trial plans to enroll 53 participants.

Related Trials

Related Intelligence Guides

In-depth guides covering this condition's trials, eligibility, and what to expect.

ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: November 2026  ·  Data Methodology