Stage IIIA Breast Cancer Clinical Trial
Official title:
Imaging Early Response of ER+, HER2- Breast Cancer to Aromatase Inhibitor (AI) +/- Ovarian Suppression (OS) Therapy With [18F]Fluorothymidine (FLT) PET
This clinical trial studies fluorine F 18 fluorothymidine (FLT) positron emission tomography (PET) in measuring treatment response in patients with newly diagnosed estrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative stage I-III breast cancer. Comparing results of diagnostic procedures done before and during hormone therapy may help doctors predict a patient's response to treatment and help plan the best treatment.
PRIMARY OBJECTIVES:
I. Measure the effect of a short course of endocrine therapy on primary breast cancer
metabolism and proliferation by measuring changes in serial FLT PET measures pre and post a
short course of endocrine therapy.
SECONDARY OBJECTIVES:
I. Compare changes in imaging measures to tissue measures of response, in particular antigen
identified by proliferation-related Ki-67 antigen (Ki-67), in the pre-therapy biopsy versus
the post-therapy surgical specimen.
II. Correlate imaging measures to measures of gene expression from pre and post therapy
assays to determine if there are molecular changes associated with early response to therapy.
OUTLINE:
Patients undergo FLT PET at baseline and 1-6 weeks after the start of treatment.
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