Clinical Trials

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SCCA Breast Cancer Clinical Trials

Phase II Marker of Hormone Sensitivity (6590)
A Phase 2 Study of [18F]Fluoroestradiol (FES) as a Marker of Hormone Sensitivity of Metastatic Breast Cancer
Status Conditions Phase Study ID
Closed Breast Cancer Phase II UWCC-6590

The purpose of this study is to test the accuracy and usefulness of an experimental type of imaging scan called FES PET. We would like to see whether or not FES-PET scans can be used to help predict how patients with metastatic breast cancer will respond to hormonal therapy.

This study does not provide treatment for breast cancer, and FES-PET scanning will not be used to plan treatment or predict treatment results for any of the volunteers (participants) in this study.

Participants in this study will already have planned their treatment (hormonal therapy) with their primary medical oncologists. Before starting hormonal therapy, participants will be asked to undergo an FES-PET scan at the University of Washington Medical Center.

Follow-up will include blood draws and imaging scans (which may be part of the participant's standard cancer care) and will occur for up to 6 months after the experimental FES-PET scan.

David Mankoff, MD, PhD
Seattle Cancer Care Alliance 800-804-8824 Refer Patient
University of Washington 800-804-8824  
Eligibility Criteria (must meet the following to participate in this study)
Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   No


  • Pathologically confirmed invasive breast cancer with clinical, radiographic and/or pathologic evidence of stage IV disease
  • Must have tissue blocks available from biopsy of at least one site of metastatic disease and/or from diagnosis of their primary breast cancer
  • Disease may be measurable (by RECIST criteria) or non-measurable but must be present in at least one non-liver site and imageable on fludeoxyglucose F 18 PET scan

    • Patients with non-measurable disease by RECIST criteria, one of the following may be used to assess and follow disease

      • MUC-1 antigen level (either CA 27.29 or CEA) > 2 times upper limit of normal
      • Circulating tumor cell assay > 5
      • FDG-PET SUV > 2.5 in purely lytic lesions
      • Elevated tumor markers alone are insufficient
  • Patients with disease in the liver only are not eligible
  • Tumor HER2/neu expression must be determined prior to study enrollment

    • Assessment may be by fluorescence in situ hybridization (FISH) assay or by IHC
    • FISH must be performed if determination is intermediate by IHC
  • Patients must be planning a course of endocrine therapy with one of the following:

    • Tamoxifen
    • Ovarian suppression using an aromatase inhibitor
    • Fulvestrant with ovarian suppression in pre-menopausal patients or fulvestrant alone
  • No HER2/neu positive disease and not planning to undergo HER2-directed therapy (trastuzumab or lapatanib)
  • No visceral crisis characterized by rapidly progressive hepatic or lymphangitic lung metastases
  • Positive for estrogen receptor (ER) and may or may not be positive for progesterone receptor by IHC in the primary tumor and/or metastatic site

    • Pathology report for assay of ER will be reviewed by one of the investigators prior to enrollment, the study pathologist will review the pathology report if necessary for determination of study eligibility


  • Known menopausal status

    • Postmenopausal is defined as:

      • A prior documented bilateral oophorectomy
      • A history of at least 12 months without spontaneous menstrual bleeding
      • Age 60 or older with a prior hysterectomy without oophorectomy
      • Age less than 60 with a prior hysterectomy without oophorectomy (or in whom the status of the ovaries is unknown), with a documented FSH level demonstrating confirmatory elevation in the postmenopausal range for the lab
    • Premenopausal patients must have a baseline FSH, and estradiol levels to determine menopausal status
  • ECOG performance status (PS) 0-2 or Karnofsky PS 60-100%
  • Life expectancy >16 weeks
  • ANC ≥ 1,000/mm³
  • Platelet count ≥ 50,000/mm³
  • Hemoglobin normal
  • Creatinine ≤ 1.5 times upper limit of normal (ULN) and estimated creatinine clearance > 50 mL/min
  • Bilirubin ≤ 1.5 times ULN
  • AST and ALT ≤ 1.5 times ULN
  • Alkaline phosphatase ≤ 2.5 times ULN
  • Not pregnant or nursing
  • Negative pregnancy test
  • Fertile patients must use effective contraception
  • No history of uncontrolled seizures, central nervous system disorders, or psychiatric disability judged by the investigator to be clinically significant, precluding informed consent
  • No other life-threatening illness (e.g., serious, uncontrolled concurrent infection or clinically significant cardiac disease - congestive heart failure, symptomatic coronary artery disease, cardiac arrhythmia not well controlled with medication)
  • Not medically unstable as judged by the patient's physician
  • No psychological, familial, sociological, or geographical conditions which do not permit compliance with the study protocol
  • No known allergic or hypersensitivity reactions to previously administered radiopharmaceuticals (patients with significant drug or other allergies or autoimmune diseases may be enrolled at the investigator's discretion)
  • Body weight ≤ 400 lbs
  • No uncontrolled diabetes mellitus, defined as fasting glucose > 200 mg/dL
  • No adult patients who require monitored anesthesia for PET scanning
  • No other prior malignancy is allowed except for the following: adequately treated basal cell or squamous cell skin cancer, in situ cervical cancer, or any other cancer from which the patient has been disease-free for 5 years


  • Meets 1 of the following criteria:

    • No prior endocrine therapy for metastatic disease
    • Off adjuvant endocrine therapy for > 6 months
    • Single adjuvant endocrine therapy duration of > 2 years at the time of first recurrence and plan to change to alternate endocrine therapy
  • More than 6-8 weeks since prior tamoxifen
  • Prior chemotherapy regimens in the adjuvant or neoadjuvant setting are allowed
  • Prior adjuvant luteinizing hormone-releasing hormone analog allowed
  • No other concurrent investigational or commercial agents or therapies for the treatment of this disease
Last Updated
May 25, 2012
See this trial at
Access protocol and consent forms at Fred Hutchinson Cancer Research Center
Disclaimer: We update this information regularly. However, what you read today may not be completely up to date.

Please remember:
  • Talk to your health care providers first before making decisions about your health care.
  • Whether you are eligible for a research study depends on many things. There are specific requirements to be in research studies. These requirements are different for each study.