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Higher dose of breast cancer drug faslodex tested in new trial

NCT ID NCT00585507

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

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

18 years and older

Sex

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

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

  • Lowell General Hospital

    Lowell, Massachusetts, 01854, United States

  • Massachusetts General Hosptial

    Boston, Massachusetts, 02114, United States

  • South Shore Hospital

    South Weymouth, Massachusetts, 02190, United States

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