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Endocrine Treatment Alone for Elderly Patients With Estrogen Receptor Positive Operable Breast Cancer and Low Recurrence Score

Endocrine Treatment Alone as Primary Treatment for Elderly Patients With Estrogen Receptor Positive Operable Breast Cancer and Low Recurrence Score

Who can join

Ages 70 and older · Women

Inclusion Criteria:

* Newly diagnosed histologically or cytologically confirmed operable invasive breast cancer defined as cT1 or T2, N0-1, and M0.
* Disease must be ER+ and HER2-.
* Ki67 score/proliferative index ≤ 30% or low to intermediate mitotic index
* Measurable disease defined as lesions that can be accurately measured in at least one dimension (longest diameter to be recorded) by ultrasound or mammogram.
* 70 years of age or older.
* ECOG performance status ≤ 3
* Able to understand and willing to sign an IRB approved written informed consent document (or that of legally authorized representative, if applicable).

Exclusion Criteria:

* Prior surgery for this cancer
* A history of other malignancy ≤ 5 years previous which would preclude endocrine treatment of their cancer.
* Currently receiving any other investigational agents.
* A history of allergic reactions attributed to compounds of similar chemical or biologic composition to any of the agents used in the study.
* Uncontrolled intercurrent illness as determined by their treating physician which would limit compliance with study requirements.
* Known HIV-positivity on combination antiretroviral therapy because of the potential for pharmacokinetic interactions with endocrine therapies. Appropriate studies will be undertaken in patients receiving combination antiretroviral therapy when indicated.

About the study

Multiple neoadjuvant endocrine trials demonstrate that women with good prognosis tumors can be identified. These trials have also demonstrated that there are not adverse effects on overall outcome if women are treated with neoadjuvant endocrine therapy for several months prior to definitive treatment. A new standard of care needs to be defined for elderly women with good prognosis estrogen receptor (ER)+ tumors, since these women may benefit from endocrine therapy alone to treat their cancer without compromising local and distant control. The investigators hypothesize that endocrine therapy alone provides adequate local and systemic control of breast cancer in a subpopulation of women 70 or older with ER+ breast cancer and low Ki67 scores.

What is being tested

• FACT-B (behavioral)
• Goserelin (drug)
• Anastrozole (drug)
• Exemestane (drug)
• Fulvestrant (drug)
• Tamoxifen (drug)

Sponsor: Washington University School of Medicine · Participants: 50 · Started: Jan 17, 2017

Contact the study team

• Rebecca L Aft, M.D., Ph.D. · Phone: 314-747-0063
• Tracie Guthrie · Phone: 314-747-4404

Official record on ClinicalTrials.gov — NCT02476786

Locations in the U.S.

Conditions

• Breast Cancer

From ClinicalTrials.gov, data retrieved Oct 2, 2026. Each study sets its own eligibility; the study team decides who can join.