High-Dose Esterified Estrogens in Treating Postmenopausal Women With Metastatic Breast Cancer That Has Failed Previous Hormone Therapy

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00131924
Recruitment Status : Terminated (Data Monitoring Committee recommended closure due to poor accrual.)
First Posted : August 19, 2005
Last Update Posted : June 11, 2012
National Cancer Institute (NCI)
Information provided by (Responsible Party):
Northwestern University

August 16, 2005
August 19, 2005
June 11, 2012
March 2004
January 2006   (Final data collection date for primary outcome measure)
Clinical response rate
Not Provided
Complete list of historical versions of study NCT00131924 on Archive Site
  • Time to disease progression
  • Toxicity
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High-Dose Esterified Estrogens in Treating Postmenopausal Women With Metastatic Breast Cancer That Has Failed Previous Hormone Therapy
Phase II Study of High-Dose Estrogen in Postmenopausal Women With Hormone Receptor-Positive Metastatic Breast Cancer After Failure of Sequential Endocrine Therapies

RATIONALE: High doses of esterified estrogens may stop the growth of breast cancer cells that no longer respond to hormone therapy.

PURPOSE: This phase II trial is studying how well high-dose esterified estrogens work in treating postmenopausal women with metastatic breast cancer that has failed previous hormone therapy.



  • Determine the clinical response rate in postmenopausal women with estrogen and/or progesterone receptor-positive metastatic breast cancer that has failed prior sequential endocrine therapy treated with high-dose esterified estrogens (Menest^®).


  • Determine time to disease progression in patients treated with this drug.
  • Determine the toxic effects of this drug in these patients.

OUTLINE: Patients receive oral high-dose esterified estrogens (Menest^®) 3 times daily. Treatment continues in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed for 2 months.

PROJECTED ACCRUAL: A total of 18-35 patients will be accrued for this study within 2 years.

Phase 2
Masking: None (Open Label)
Primary Purpose: Treatment
Breast Cancer
Biological: esterified estrogens
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*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
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January 2006
January 2006   (Final data collection date for primary outcome measure)


  • Histologically confirmed breast cancer

    • Metastatic disease
  • Documented disease progression

    • Must have received and subsequently failed (due to disease progression) ≥ 2 prior sequential endocrine therapies for treatment of metastatic breast cancer

      • Disease progression during adjuvant tamoxifen is considered 1 prior therapy
      • The 2 most recent treatments must have been endocrine agents
  • At least 1 objective measurable disease parameter
  • Brain metastases allowed provided both of the following criteria are met:

    • Brain metastases were previously treated AND are currently stable
    • Brain metastases are not the only site of metastatic disease
  • Hormone receptor status

    • Estrogen and/or progesterone receptor-positive tumor



  • 18 and over


  • Female

Menopausal status

  • Postmenopausal, as defined by any of the following:

    • At least 50 years of age with an intact uterus AND amenorrheic for the past 12 months
    • At least 50 years of age without a uterus AND follicle-stimulating hormone (FSH) level within postmenopausal range
    • Under 50 years of age and FSH level within postmenopausal range
    • Prior bilateral oophorectomy

Performance status

  • ECOG 0-2

Life expectancy

  • At least 6 months


  • Adequate hematologic function


  • Adequate hepatic function
  • Bilirubin ≤ 1.5 times upper limit of normal
  • No history of hepatic adenoma


  • Adequate renal function
  • No history of hypercalcemia or severe hypocalcemia


  • No history of thrombophlebitis or thromboembolic disorders associated with prior estrogen use
  • No active thrombophlebitis or thromboembolic disorders
  • No history of uncontrolled hypertension


  • Not pregnant
  • No undiagnosed abnormal vaginal bleeding
  • No other serious medical illness
  • No psychiatric illness that would preclude giving informed consent
  • No other invasive malignancy within the past 5 years except curatively treated basal cell or squamous cell skin cancer or carcinoma in situ of the cervix


Biologic therapy

  • Not specified


  • Prior chemotherapy for metastatic disease allowed
  • Prior adjuvant chemotherapy allowed

Endocrine therapy

  • See Disease Characteristics


  • Prior radiotherapy allowed provided the only site of measurable disease was not irradiated


  • Not specified
Sexes Eligible for Study: Female
18 Years and older   (Adult, Older Adult)
Contact information is only displayed when the study is recruiting subjects
United States
NCI 03B5
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Northwestern University
Northwestern University
National Cancer Institute (NCI)
Principal Investigator: William J. Gradishar, MD Robert H. Lurie Cancer Center
Northwestern University
June 2012

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP