The CAT Study: Atamestane Plus Toremifene Versus Letrozole in Advanced Breast Cancer
Public ClinicalTrials.gov record NCT00097344. 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
Phase 3 Study of Atamestane Plus Toremifene Versus Letrozole in Advanced Breast Cancer
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of this study is to determine whether maximal estrogen suppression achieved via the combination of an experimental drug, atamestane, plus an FDA-approved drug, toremifene (Fareston®), is more effective than another approved drug, letrozole (Femara®), in delaying the growth of breast cancer, and whether the side effects of the combined hormonal therapy are different from the side effects of letrozole.
Study identification
- NCT ID
- NCT00097344
- Recruitment status
- Terminated
- Study type
- Interventional
- Phase
- Phase 3
- Enrollment
- 842 participants
Conditions and interventions
Conditions
Interventions
- Atamestane Drug
- Toremifene Drug
- Letrozole Drug
- Aromatase inhibition Drug
- Estrogen receptor blocker Drug
- Hormone therapy Procedure
- Endocrine therapy Procedure
- Antiestrogen therapy Procedure
Drug · Procedure
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
- Dec 2004 (Type not available)
- Primary completion
- Not listed
- Completion
- Aug 2006 (Type not available)
- Last update posted
- Aug 23, 2007
2004 – 2006
United States locations
- U.S. sites
- 49
- U.S. states
- 28
- U.S. cities
- 49
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Research Site | Mobile | Alabama | 36607 | — |
| Research Site | Tuscon | Arizona | 85704 | — |
| Research Site | Hot Springs | Arkansas | 71913 | — |
| Research Site | Fountain Valley | California | 92708 | — |
| Research Site | Greenbrae | California | 94904 | — |
| Research Site | Los Angeles | California | 90807 | — |
| Research Site | Poway | California | 92064 | — |
| Research Site | Greenwich | Connecticut | 06830 | — |
| Research Site | Jacksonville | Florida | 32209 | — |
| Research Site | Kissimmee | Florida | 34741 | — |
| Research Site | Miami | Florida | 33176 | — |
| Research Site | Ocala | Florida | 34474 | — |
| Research Site | Pembroke Pines | Florida | 33028 | — |
| Research Site | Tampa | Florida | 33607 | — |
| Research Site | Augusta | Georgia | 30901 | — |
| Research Site | Savannah | Georgia | 31405 | — |
| Research Site | Evansville | Indiana | 47713 | — |
| Research Site | New Albany | Indiana | 47150 | — |
| Research Site | Lenexa | Kansas | 66214 | — |
| Research Site | Louisville | Kentucky | 40207 | — |
| Research Site | Shreveport | Louisiana | 71105 | — |
| Research Site | Towson | Maryland | 21204 | — |
| Research Site | Detroit | Michigan | 48076 | — |
| Research Site | Flint | Michigan | 48532 | — |
| Research Site | Robbinsdale | Minnesota | 55422 | — |
| Research Site | St Louis | Missouri | 63128 | — |
| Research Site | Billings | Montana | 59101 | — |
| Research Site | Reno | Nevada | 89502 | — |
| Research Site | Cherry Hill | New Jersey | 08003 | — |
| Research Site | Newark | New Jersey | 07101 | — |
| Research Site | Fresh Meadows | New York | 11365 | — |
| Research Site | Valhalla | New York | 10595 | — |
| Research Site | Wooster | Ohio | 44691 | — |
| Research Site | Zanesville | Ohio | 43701 | — |
| Research Site | Philadelphia | Pennsylvania | 19146 | — |
| Research Site | West Reading | Pennsylvania | 19611 | — |
| Research Site | Columbia | South Carolina | 29203 | — |
| Research Site | Bristol | Tennessee | 37620 | — |
| Research Site | Memphis | Tennessee | 38120 | — |
| Research Site | Houston | Texas | 77024 | — |
| Research Site | Pasadena | Texas | 77504 | — |
| Research Site | Ogden | Utah | 84403 | — |
| Research Site | Chesapeake | Virginia | 23320 | — |
| Research Site | Danville | Virginia | 24541 | — |
| Research Site | Norfolk | Virginia | 23502 | — |
| Research Site | Lacey | Washington | 98503 | — |
| Research Site | Milwaukee | Wisconsin | 53215 | — |
| Research Site | Racine | Wisconsin | 53405 | — |
| Research Site | Rhinelander | Wisconsin | 54501 | — |
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 55 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00097344, 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 Aug 23, 2007 · Synced Oct 24, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT00097344 live on ClinicalTrials.gov.