This pilot phase I trial studies how well fluorine F 18 ISO-1 positron emission tomography/computed tomography (PET/CT) imaging works in detecting sigma-2 receptor in patients with known or suspected breast cancer. Sigma receptors may be involved in making tumors divide. Fluorine F 18 ISO-1 PET/CT imaging may detect sigma-2 receptors and provide information that could be used to determine the best therapy for breast cancer patients in the future.
Additional locations may be listed on ClinicalTrials.gov for NCT02284919.
See trial information on ClinicalTrials.gov for a list of participating sites.
PRIMARY OBJECTIVES:
I. Correlate fluorine F 18 ISO-1 ([18F]ISO-1) uptake with qualitative immunohistochemical staining for the sigma 2 receptor, progesterone receptor membrane component 1 (PGRMC1).
SECONDARY OBJECTIVES:
I. Evaluate the feasibility of using [18F]ISO-1 to image sigma-2 receptor binding in breast cancer.
II. Evaluate the safety of [18F]ISO-1.
III. Correlate [18F]ISO-1 uptake with sigma-2 receptor binding studies using [3H]RHM-1.
IV. Correlate [18F]ISO-1 uptake with pathologic assays measuring cellular proliferation rates (e.g. Ki-67).
V. Correlate [18F]ISO-1 uptake a with multi-gene expression assay, validated to predict recurrence.
VI. Correlate [18F]ISO-1 uptake with outcomes (e.g. time to recurrence, progression free survival and overall survival).
VII. Test the association of [18F]ISO-1 uptake with phenotypic breast cancer subtypes (e.g. human epidermal growth factor receptor 2 positive [HER2+], triple negative [TN], estrogen receptor [ER]/ progesterone receptor [PR]+, etc.)
OUTLINE:
Patients receive fluorine F 18 ISO-1 tracer intravenously (IV) and undergo PET/CT over approximately 60 minutes.
After completion of study, patients are followed up periodically.
Lead OrganizationUniversity of Pennsylvania/Abramson Cancer Center
Principal InvestigatorElizabeth S. McDonald