Treatment and Survival Continuation Study of Atamestane Plus Toremifene vs Letrozole in Advanced Breast Cancer
Public ClinicalTrials.gov record NCT00267553. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Open Label Treatment and Survival Continuation Study of Atamestane Plus Toremifene Versus Letrozole in Advanced Breast Cancer
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Protocol 777-CLP-32 is the treatment and survival continuation protocol of Biomed 777-CLP-29, and will continue to compare combined hormonal therapy using the experimental aromatase inhibitor (AI) atamestane combined with the FDA-approved anti-estrogen toremifene (Fareston®), to the single agent FDA-approved aromatase inhibitor letrozole (Femara®) for the treatment of advanced breast cancer. The purpose of this study is to determine whether maximal estrogen suppression achieved via the combination of atamestane, plus toremifene (Fareston®), is more effective than letrozole (Femara®) in delaying the growth of breast cancer.
Study identification
- NCT ID
- NCT00267553
- Recruitment status
- Terminated
- Study type
- Interventional
- Phase
- Phase 3
- Enrollment
- 200 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- Female
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Nov 2005 (Type not available)
- Primary completion
- Not listed
- Completion
- Jun 2006 (Actual)
- Last update posted
- Sep 10, 2007
2005 – 2006
United States locations
- U.S. sites
- 6
- U.S. states
- 6
- U.S. cities
- 6
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Not listed | Greenbrae | California | — | — |
| Not listed | Saint Joseph | Michigan | — | — |
| Not listed | Kansas City | Missouri | — | — |
| Not listed | Houston | Texas | — | — |
| Not listed | Norfolk | Virginia | — | — |
| Not listed | Lacey | Washington | — | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 29 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00267553, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Sep 10, 2007 · Synced Oct 19, 2026
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Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT00267553 live on ClinicalTrials.gov.