Test - Retest Reproducibility of 18F Fluoroestradiol (FES) PET

Withdrawn before enrolling · Phase 2

Conditions studied: Breast Cancer

In brief

This study will formally address the hypothesis that FES-PET/CT measurement of ER expression predicts clinical benefit of first-line endocrine therapy in newly diagnosed ER+ metastatic breast cancer patients and establishes the repeatability of FES PET/CT.

Key facts

Study ID

NCT03065712

Run by

University of Texas Southwestern Medical Center

People needed

0

Starts

2017-02-22

Expected to finish

2021-02-20

Last updated by the study team

2020-05-12

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Patients must be over 18 years old and capable and willing to provide informed consent.
• Patients of childbearing potential must have a negative urine or serum pregnancy test within 7 days prior to PET/CT imaging per institution's standard of care;
• A female of child-bearing potential is any woman (regardless of sexual orientation, having undergone a tubal ligation, or remaining celibate by choice) who meets the following criteria;
• Has not undergone a hysterectomy or bilateral oophorectomy; or
• Has not been naturally postmenopausal for at least 12 consecutive months (i.e., has had menses at any time in the preceding 12 consecutive months).
• Medically stable as judged by patient's physician.
• Life expectancy must be estimated at > 6 months.
• Patients must have an ECOG performance status of 0-3 (restricted to ECOG PS 0-2 if age >70 years).
• Patients with known allergic or hypersensitivity reactions to previously administered radiopharmaceuticals of similar chemical or biologic composition to FES are NOT eligible.
• Patients with liver failure are NOT eligible.
• Patient must NOT be breast-feeding.
• Histologically confirmed ER+ breast cancer either from a metastatic biopsy or from a primary breast tumor with imaging evidence of metastatic disease. The pathology report and either (1) tumor tissue (blocks or unstained slides) or (2) a photomicrograph of the ER IHC slide from at least one site of metastatic disease
• No prior endocrine therapy for metastatic disease is allowed (i.e. must be first-line endocrine therapy for metastatic disease). However, a history of adjuvant endocrine therapy is allowed, as long as the date of diagnosis of metastatic disease is > 2 years following initiation of adjuvant endocrine therapy. Patients who develop metastatic disease while still receiving adjuvant endocrine therapy must have a change in the type of endocrine agent used for subsequent metastatic disease treatment. Patients on blocking adjuvant therapy (with a blocking agent such as toremifene or tamoxifen) must be off the agents for a minimum of 60 days to allow for adequate uptake of FES
• Patients with human epidermal growth factor-2 positive (HER2+) metastatic tumors are NOT eligible
• Postmenopausal women, men, or premenopausal women for whom endocrine therapy (tamoxifen, aromatase inhibitor (AI) with or without ovarian suppression or fulvestrant), with or without a CDK4/6 inhibitor is planned after FES-PET/CT is completed
• Disease may be measurable (by RECIST 1.1 criteria) or non-measurable but must be present in at least one non-liver site, 1.5 cm or greater and visualized on PET/CT with [18F]-fluorodeoxyglucose (FDG). Patients with effusion only disease or disease only in the liver are not eligible for the study
• Patient must be able to lie still for a 20 to 30 minute PET/CT scan.

You may not qualify if…

• . Patients not meeting the inclusion criteria.

Where it is running

• Clements University Hospital — Dallas, Texas, United States

Full record on ClinicalTrials.gov

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