Higher dose of breast cancer drug faslodex tested in new trial
NCT ID NCT00585507
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This phase 2 trial is testing a higher dose (500 mg) of the hormone therapy fulvestrant (Faslodex) as a first treatment for postmenopausal women with hormone receptor positive metastatic breast cancer. The study aims to see if this higher dose improves clinical benefit rates compared to the standard dose. Forty women will receive injections on days 1, 15, and 29, then monthly, with researchers tracking tumor response, side effects, and how long the benefit lasts.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- fulvestrant (Faslodex)
- What this could lead to
- If successful, this higher dose of fulvestrant could improve control of metastatic breast cancer, delaying disease progression and extending the time patients feel well.
- What could go wrong
- This is a small phase 2 trial with only 40 participants, so results may not apply broadly. The higher dose could also cause more side effects, and the drug may not work better than the standard dose.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
-
About 40 people
The number the study aims to enrol. It can still change while the study runs.
- Started
-
Apr 2004
- Expected to finish
-
Mar 2027
An estimate. End dates often move.
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Female participants only
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Female * 18 years of age or older * Histologically confirmed adenocarcinoma of the breast progressing local-regional or metastatic disease that is not considered amenable to curative treatment * Evidence of hormone sensitivity of primary or secondary tumor tissue * Postmenopausal as defined by criteria listed in protocol * May have had adjuvant endocrine therapy if discontinued at least 12 months prior to inclusion. Subjects who have had minimal exposure to adjuvant or first line metastatic endocrine treatment during the 12 months prior to study enrollment can be eligible with overall PI and sponsor permission * Prior trastuzumab and biologic therapy is allowed, but must be discontinued more than 2 weeks prior to inclusion * Presence of measurable or evaluable, nonmeasurable, disease. Any x-rays and scans for assessment of measurable disease must be performed with 28 days prior to registration * Eastern Cooperative Oncology Group (ECOG) performance status of 0,1 or 2 Exclusion Criteria: * Presence of life-threatening metastatic disease * Endocrine therapy the advanced disease setting * Systemic chemotherapy, whether as adjuvant therapy or for advanced disease, within previous 4 weeks * Trastuzumab or biologic therapy within previous 2 weeks * Extensive radiation therapy within the last 2 weeks * Prior adjuvant or neoadjuvant treatment with fulvestrant is not allowed * Concomitant anticancer treatments * Chronic bisphosphonates for hypercalcemia or prevention of bone metastases * Subjects receiving long-term anticoagulant therapy with warfarin * Estrogen replacement therapy within 6 months of trial entry * Previous or current systems malignancy within the past 3 years * Treatment with non approved or investigational drug within 2 weeks before study entry * Any evidence of severe or uncontrolled systemic disease * History of bleeding diathesis * Any severe concomitant condition which makes it undesirable for the subject to participate in the study or which would jeopardize compliance with the study protocol
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Beth Israel Deaconess Medical Center
Boston, Massachusetts, 02115, United States
-
Dana-Farber Cancer Institute
Boston, Massachusetts, 02115, United States
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Lowell General Hospital
Lowell, Massachusetts, 01854, United States
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Massachusetts General Hosptial
Boston, Massachusetts, 02114, United States
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South Shore Hospital
South Weymouth, Massachusetts, 02190, United States
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