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A Study Comparing Cancer Imaging Approaches in People With Lobular Breast Cancer

18F-Fluoroestradiol (FES) Positron Emission Tomography for the Detection and Treatment Response Monitoring in Patients With Metastatic Lobular Breast Carcinoma

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT06557148
Enrollment
7
Registered
2024-08-16
Start date
2024-08-13
Completion date
2027-08-13
Last updated
2026-07-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer, Breast Carcinoma, Lobular Breast Carcinoma, Metastatic Breast Cancer, Metastatic Breast Carcinoma, Metastatic Lobular Breast Carcinoma

Keywords

breast cancer, lobular breast cancer, lobular breast carcinoma, breast carcinoma, metastatic breast cancer, metastatic lobular breast cancer, metastatic lobular breast carcinoma, metastatic breast carcinoma, 24-134, Memorial Sloan Kettering Cancer Center

Brief summary

The purpose of this study to compare two types of cancer imaging scans to see which is better at detecting and monitoring metastatic ILC. This study will compare PET/CT (positron emission tomography/computed tomography) scans using the radiotracer fluorine 18 (18F)-fluoroestradiol (FES) with a standard imaging approach for detecting and monitoring ILC, PET/CT scans using the radiotracer 18F-fluorodeoxyglucose (FDG). These scans will be referred to as FES PET/CT scans and FDG PET/CT scans.

Interventions

Scanned at baseline and again posttreatment within 2 weeks of the restaging FDG PET/CT

Sponsors

Memorial Sloan Kettering Cancer Center
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Adult patient \> 18 years old * Biopsy-proven metastatic ILC * Confirmed ER+ breast cancer from either primary tumor or metastatic biopsy (ER receptor percent staining ≥ 10% of tumor cells by IHC) * HER2-negative per ASCO/CAP * ECOG Performance Status Score of 0, 1 or 2. * Patient can have received up to 2 lines of therapy in the metastatic setting * Life expectancy of at least 12 months

Exclusion criteria

* Low ER expression defined as ER \<10% of tumor cells by IHC * Patients who have been on adjuvant ER-blocking endocrine therapy with SERM or SERD without an 8- and 24-weeks washout, respectively. (The use of aromatase inhibitors or ovarian suppression is permitted given that they do not block estrogen receptors). * Pregnancy or lactation or parturient or nursing mother * Patient presents with any other clinically active, serious, life-threatening disease, medical, or psychiatric condition, and/or who has a life expectancy of \<12 months, or for whom study participation may compromise their management; and/or a patient who the investigator judges to be unsuitable for participation in the study for any reason.

Design outcomes

Primary

MeasureTime frameDescription
Comparison of FES PET/CT in Metastatic Invasive Lobular Carcinoma/ILC to standard-of-care (SOC) imaging with FDG PET/CT at baseline1 yearDisease detection by 18F-FES and 18F-FDG PET/CT images at baseline will be directly compared

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORSomali Gavane, MD

Memorial Sloan Kettering Cancer Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 15, 2026