Breast NeoplasmsPhase 3TEAMNCT00036270
Randomized Phase III Study Of Exemestane (Aromasin) For 5 Years Versus Tamoxifen for 2.5 to 3 Years Followed By Exemestane
A Phase 3 study testing exemestane (Aromasin) and tamoxifen + exemestane in people with Breast Neoplasms, run by Pfizer at 179 sites in United States.
Trial summary
To compare the effects of exemestane for 5 years versus tamoxifen and exemestane given sequentially over 5 years in the adjuvant treatment of postmenopausal women with early breast cancer. Read more about this study
- Who is it for?
- Ages 50 years and older, women only
- Conditions the study is for
- Breast Neoplasms
- What is being tested?
- exemestane (Aromasin) and tamoxifen + exemestane
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 9,779 participants
- Where
- 179 sitesUnited States
- Study dates
- Aug 2001to Feb 2011
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 50 years and older
- Women only
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Histologically/cytologically confirmed adenocarcinoma of the breast, followed by adequate surgical resection and/or radiotherapy, and/or adjuvant chemotherapy, if indicated.
- Stage T1-3 N0-2 Mo, Any TNM stage BC for whom adjuvant hormonal therapy is being considered.
Who cannot join
- Those patients not deemed to have had potentially curative primary surgical treatment or one of the following criteria:
- Inflammatory breast cancer
- Histologically positive supraclavicular nodes
- Ulceration/infiltration of local skin metastasis
- Neoadjuvant chemotherapy
- Ductal carcinoma in situ (DCIS) or lobular carcinoma in situ (LCIS) without invasion
- ER and PR negative primary tumor or ER/PR unknown status.
Trial locations and contacts
179 sites in 1 country.
179 sites in 1 country
United States179 sites
Pfizer Investigational Site
Abilene, Texas, 79606-5208
Pfizer Investigational Site
Albany, New York, 12206
Pfizer Investigational Site
Albany, New York, 12208
Pfizer Investigational Site
Alton, Illinois, 62002
Pfizer Investigational Site
Amsterdam, New York, 12010
Pfizer Investigational Site
Arlington, Texas, 76012
Pfizer Investigational Site
Arlington, Texas, 76014
Pfizer Investigational Site
Arlington Heights, Illinois, �60005
Pfizer Investigational Site
Asheville, North Carolina, 28801
Pfizer Investigational Site
Aurora, Colorado, 80012
Pfizer Investigational Site
Austin, Texas, 78731
Pfizer Investigational Site
Austin, Texas, 78745
Pfizer Investigational Site
Bartlesville, Oklahoma, 74006
Pfizer Investigational Site
Beaumont, Texas, 77702-1449
Pfizer Investigational Site
Bedford, Texas, 76022'
Pfizer Investigational Site
Bessemer, Alabama, 35022
Pfizer Investigational Site
Birmingham, Alabama, 35205
Pfizer Investigational Site
Birmingham, Alabama, 35209
Pfizer Investigational Site
Birmingham, Alabama, 35211
Pfizer Investigational Site
Birmingham, Alabama, 35213
Pfizer Investigational Site
Birmingham, Alabama, 35235
Pfizer Investigational Site
Boulder, Colorado, 80303
Pfizer Investigational Site
Brockport, New York, 14420
Pfizer Investigational Site
Burien, Washington, 98166
Pfizer Investigational Site
Burnsville, Minnesota, 55337
Pfizer Investigational Site
Canandaigua, New York, 14424
Pfizer Investigational Site
Carmel, Indiana, 46032
Pfizer Investigational Site
Cary, North Carolina, 27518
Pfizer Investigational Site
Cedar Rapids, Iowa, 52403
Pfizer Investigational Site
Chesapeake, Virginia, 23320
Pfizer Investigational Site
Christianburg, Virginia, 24073
Pfizer Investigational Site
Christianburg,, Virginia, 24073
Pfizer Investigational Site
Clearwater, Florida, 33761
Pfizer Investigational Site
Colorado Springs, Colorado, 80909
Pfizer Investigational Site
Columbia, Missouri, 65201
Pfizer Investigational Site
Dallas, Texas, 75230-2510
Pfizer Investigational Site
Dallas, Texas, 75231-4400
Pfizer Investigational Site
Dallas, Texas, 75237
Pfizer Investigational Site
Dallas, Texas, 75246
Pfizer Investigational Site
Denton, Texas, 76210
Pfizer Investigational Site
Denver, Colorado, 80218
Pfizer Investigational Site
Denver, Colorado, 80220
Pfizer Investigational Site
Durham, North Carolina, 27704
Pfizer Investigational Site
Easley, South Carolina, 29640
Pfizer Investigational Site
Edina, Minnesota, 55435-2150
Pfizer Investigational Site
Edmonds, Washington, 98026
Pfizer Investigational Site
El Paso, Texas, 79902
Pfizer Investigational Site
El Paso, Texas, 79915
Pfizer Investigational Site
Elizabeth City, North Carolina, 27909
Pfizer Investigational Site
Eugene, Oregon, 97401
Pfizer Investigational Site
Fairfax, Virginia, 22031
Pfizer Investigational Site
Fishers, Indiana, 46037
Pfizer Investigational Site
Flagstaff, Arizona, 86001
Pfizer Investigational Site
Fort Collins, Colorado, *0524
Pfizer Investigational Site
Fort Worth, Texas, 76104
Pfizer Investigational Site
Fredericksburg, Texas, 78624
Pfizer Investigational Site
Gainesville, Virginia, 20155
Pfizer Investigational Site
Garland, Texas, 75042
Pfizer Investigational Site
Geneva, New York, 14456
Pfizer Investigational Site
Green Valley, Arizona, 85614
Pfizer Investigational Site
Greenfield, Indiana, 46140
Pfizer Investigational Site
Greenville, South Carolina, 29605
Pfizer Investigational Site
Greenville, South Carolina, 29615
Pfizer Investigational Site
Hampton, Virginia, 23666
Pfizer Investigational Site
Hickory, North Carolina, 28602
Pfizer Investigational Site
Houston, Texas, 77024
Pfizer Investigational Site
Hudson, Florida, 34667
Pfizer Investigational Site
Hudson, New York, 12534
Pfizer Investigational Site
Indianapolis, Indiana, 46219
Pfizer Investigational Site
Indianapolis, Indiana, 46227
Pfizer Investigational Site
Irving, Texas, 75061-224
Pfizer Investigational Site
Jacksonville, Florida, 32204
Pfizer Investigational Site
Jacksonville, Florida, 32207
Pfizer Investigational Site
Kansas City, Kansas, 66112
Pfizer Investigational Site
Kansas City, Missouri, 64111
Pfizer Investigational Site
Kansas City, Missouri, 64131
Pfizer Investigational Site
Kansas City, Missouri, 64154
Pfizer Investigational Site
Kernersville, North Carolina, 27284
Pfizer Investigational Site
Kerrville, Texas, 78028
Pfizer Investigational Site
Kettering, Ohio, 45409
Pfizer Investigational Site
Kingston, Pennsylvania, 18704-5535
Pfizer Investigational Site
Lakewood, Colorado, 80228
Pfizer Investigational Site
Las Vegas, Nevada, 89128
Pfizer Investigational Site
Latham, New York, 12110-0610
Pfizer Investigational Site
Lauderhill, Florida, 33319
Pfizer Investigational Site
Lee's Summit, Missouri, 29307
Pfizer Investigational Site
Lee's Summit, Missouri, 64064
Pfizer Investigational Site
Lewisville, Texas, 75067
Pfizer Investigational Site
Lexington, North Carolina, 27295
Pfizer Investigational Site
Lone Tree, Colorado, 80124
Pfizer Investigational Site
Longmont, Colorado, 80501
Pfizer Investigational Site
Longview, Texas, 75601
Pfizer Investigational Site
Maplewood, Minnesota, 55109
Pfizer Investigational Site
McAllen, Texas, 78503
Pfizer Investigational Site
Melbourne, Florida, 32901
Pfizer Investigational Site
Mesquite, Texas, 75150
Pfizer Investigational Site
Midland, Texas, 79701
Pfizer Investigational Site
New Braunfels, Texas, 78130
Pfizer Investigational Site
New Port Richey, Florida, 34655
Pfizer Investigational Site
Newport News, Virginia, 23606
Pfizer Investigational Site
Niles, Illinois, 60714
Pfizer Investigational Site
Norfolk, Virginia, 23502
Pfizer Investigational Site
Norman, Oklahoma, 73071
Pfizer Investigational Site
North Adams, Massachusetts, 01247
Pfizer Investigational Site
North Little Rock, Arkansas, 72117
Pfizer Investigational Site
Ocala, Florida, 34474
Pfizer Investigational Site
Odessa, Texas, 79761
Pfizer Investigational Site
Oklahoma City, Oklahoma, 73102
Pfizer Investigational Site
Oklahoma City, Oklahoma, 73104-5020
Pfizer Investigational Site
Oklahoma City, Oklahoma, 73109
Pfizer Investigational Site
Oklahoma City, Oklahoma, 73112-4416
Pfizer Investigational Site
Orange Park, Florida, 32073
Pfizer Investigational Site
Oro Valley, Arizona, 85737
Pfizer Investigational Site
Palatka, Florida, 32177
Pfizer Investigational Site
Paris, Texas, 75460-5004
Pfizer Investigational Site
Phoenix, Arizona, 85012
Pfizer Investigational Site
Pittsfield, Massachusetts, 01201
Pfizer Investigational Site
Plano, Texas, 75075-7787
Pfizer Investigational Site
Plantation, Florida, 33324
Pfizer Investigational Site
Portland, Oregon, 97210
Pfizer Investigational Site
Portland, Oregon, 97213-2996
Pfizer Investigational Site
Portland, Oregon, 97216
Pfizer Investigational Site
Portland, Oregon, 97225
Pfizer Investigational Site
Pueblo, Colorado, 81008
Pfizer Investigational Site
Pulaski, Virginia, 24301
Pfizer Investigational Site
Raleigh, North Carolina, 27607
Pfizer Investigational Site
Raleigh, North Carolina, 27614
Pfizer Investigational Site
Rexford, New York, 12148
Pfizer Investigational Site
Roanoke, Virginia, 24101
Pfizer Investigational Site
Round Rock, Texas, 78681
Pfizer Investigational Site
Safford, Arizona, 85546
Pfizer Investigational Site
Saint Augustine, Florida, 32086
Pfizer Investigational Site
Saint Paul, Minnesota, 55102-2389
Pfizer Investigational Site
Salem, Virginia, 24153
Pfizer Investigational Site
San Antonio, Texas, 78212
Pfizer Investigational Site
San Antonio, Texas, 78217
Pfizer Investigational Site
San Antonio, Texas, 78229
Pfizer Investigational Site
San Antonio, Texas, 78258-3912
Pfizer Investigational Site
Santa Fe, New Mexico, 87505
Pfizer Investigational Site
Scottsdale, Arizona, 85258
Pfizer Investigational Site
Seattle, Washington, 98133-8414
Pfizer Investigational Site
Seattle, Washington, 98133
Pfizer Investigational Site
Sedona, Arizona, 86336
Pfizer Investigational Site
Seneca, North Carolina, 29672
Pfizer Investigational Site
Shawnee Mission, Kansas, 66204
Pfizer Investigational Site
Shelbyville, Indiana, 46176
Pfizer Investigational Site
Sherman, Texas, TX 75090-0504
Pfizer Investigational Site
Spartanburg, South Carolina, 29307
Pfizer Investigational Site
Spokane, Washington, 99202
Pfizer Investigational Site
Spokane, Washington, 99216
Pfizer Investigational Site
Spokane, Washington, 99218
Pfizer Investigational Site
Springfield, Oregon, 97477
Pfizer Investigational Site
St Louis, Missouri, 63136
Pfizer Investigational Site
Terre Haute, Indiana, 47802
Pfizer Investigational Site
Thornton, Colorado, 80260-
Pfizer Investigational Site
Troy, New York, 12180
Pfizer Investigational Site
Tualatin, Oregon, 97062
Pfizer Investigational Site
Tucson, Arizona, 85710
Pfizer Investigational Site
Tucson, Arizona, 85712
Pfizer Investigational Site
Tucson, Arizona, 85745
Pfizer Investigational Site
Tulsa, Oklahoma, 74104
Pfizer Investigational Site
Tulsa, Oklahoma, 74133
Pfizer Investigational Site
Tulsa, Oklahoma, 74136
Pfizer Investigational Site
Tuscon, Arizona, 85704
Pfizer Investigational Site
Tyler, Texas, 75702
Pfizer Investigational Site
Vancouver, Washington, 98684-6930
Pfizer Investigational Site
Vancouver, Washington, 98684
Pfizer Investigational Site
Vancouver, Washington, 98686
Pfizer Investigational Site
Waco, Texas, 76712
Pfizer Investigational Site
Webster, Texas, 77598
Pfizer Investigational Site
Weslaco, Texas, 78596
Pfizer Investigational Site
Westminster, Maryland, 21157
Pfizer Investigational Site
Wichita Falls, Texas, 76310
Pfizer Investigational Site
Williamsburg, Virginia, 23188
Pfizer Investigational Site
Winfield, Illinois, 60190
Pfizer Investigational Site
Winston-Salem, North Carolina, 27103
Pfizer Investigational Site
Woodbridge, Virginia, 22191
Pfizer Investigational Site
Woodbury, Minnesota, 55125
Pfizer Investigational Site
Wytheville, Virginia, 24382
About this study
Official title: Randomized Phase III Study Of Exemestane (Aromasin) For 5 Years Versus Tamoxifen For 2.5- 3 Years Followed By Exemestane (Aromasin) For A Total Of 5 Years As Adjuvant Therapy For Postmenopausal, Receptor Positive, Node Negative or Node Positive Breast Cancer Patients
To compare the effects of exemestane for 5 years versus tamoxifen and exemestane given sequentially over 5 years in the adjuvant treatment of postmenopausal women with early breast cancer.
This Pfizer sponsored trial is part of an international collaboration of investigators conducting 7 similar yet independent studies in 9 countries. This study is designed to be part of the larger TEAM trial where the data from these 7 studies will be combined. A pre-specified analysis of the pooled data will be conducted.
- Conditions
- Breast Neoplasms
- Being tested
- exemestane (Aromasin), tamoxifen + exemestane
- Medical subject headings
- Breast Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
exemestane (Aromasin)Drug
Also called aromasin
exemestane, orally, 25 mg, for 5 years
tamoxifen + exemestaneDrug
tamoxifen, 20 mg, orally, daily, 2-3 years; followed by exemestane, orally, 25 mg, for a total of 5 years of therapy
| Study group | Role | What they receive |
|---|---|---|
| exemestane | Experimental | Not described Receives: Drug: exemestane (Aromasin) |
| tamoxifen + exemestane | Experimental | Not described Receives: Drug: tamoxifen + exemestane |
What is being measured
The primary outcome is the main question the study is designed to answer.
Disease Free Survival (DFS): Number of Events (Disease Relapse or Death) From Baseline up to 2.75 Years
Number of events (disease relapse or death) to time of observation for DFS. DFS defined as time from randomization to earliest documentation of disease relapse or death from any cause in postmenopausal, receptor positive, node negative or node positive breast cancer patients for adjuvant treatment with exemestane compared with adjuvant tamoxifen therapy at 2.75 years. Disease relapse: primary tumor recurrence (locoregional or distant) and ipsilateral or contralateral breast cancer (CBC). Intercurrent death: death without disease relapse.
Measured: Baseline (Month 0) up to 2.75 years
Disease Free Survival (DFS): Number of Events (Disease Relapse or Death) From Baseline up to 5 Years
Number of events (disease relapse or death) to time of observation for DFS. DFS defined as time from randomization to earliest documentation of disease relapse or death from any cause in postmenopausal, receptor positive, node negative or node positive breast cancer patients for adjuvant treatment with exemestane compared with adjuvant tamoxifen therapy at 5 years. Disease relapse: primary tumor recurrence (locoregional or distant) and ipsilateral or contralateral breast cancer (CBC). Intercurrent death: death without disease relapse.
Measured: Baseline (Month 0) up to 5 years
Secondary outcomes (4)
Number of Events for Overall Survival (OS)
Number of events (death) to time of observation for OS. OS is the duration from randomization to death. For participants who are alive, overall survival is censored at the last contact.
Measured: Baseline (Month 0) up to 5 years
Time to New Primary Breast Cancers
New primary breast cancers were defined as events of ipsilateral/contralateral breast cancer (CBC).
Measured: Baseline (Month 0) up to 5 years
Number of Events for Time to Relapse
Number of events to time of observation for relapse. Relapse is defined as all recurrences of the primary tumor (loco-regional and distant recurrence), second primary breast cancer, contralateral breast cancer.
Measured: Baseline (Month 0) up to 5 years
Number of Participants With New Primary Non-breast Cancers
Number of participants with new primary non-breast cancers which included colorectal cancer, lung cancer, endometrial cancer, ductal carcinoma in situ (DCIS) and other primary cancer types.
Measured: Baseline (Month 0) up to 5 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 May 2002 (estimated)
- Study startAug 2001
- Primary completionOct 2008
- Study completionFeb 2011
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (6)Papers the sponsor has linked to this study.
- Other trials for Breast NeoplasmsStudies of the same condition, open and under way.
- More trials run by PfizerThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 9,779 participants (actual)
Sponsor and investigators
- Lead sponsor
- Pfizer
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Pfizer CT.gov Call Center, Study director, Pfizer
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00036270
- Sponsor's protocol ID
- 971-ONC-0028-081
- Other IDs
- A5991026
- Acronym
- TEAM
- Status last verified
- Oct 2015
- First submitted
- 8 May 2002
- Last updated
- 28 Oct 2015
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
Publications
Leblanc A, Beltran-Bless AA, Pond GR, El Emam K, Juwara L, Clemons L, Bayani J, Pilgram L, Pharoah P, Mallon E, Taylor KJ, Markopoulos C, Dirix L, Vandermeer L, Hilton J, Savard MF, Bartlett JMS, Clemons M. Prognostic and predictive performance of PREDICT 2.1, PREDICT v3, and RSClin in node-negative early breast cancer: a TEAM pathology substudy. Breast Cancer Res Treat. 2026 Feb 5;215(3):74. doi: 10.1007/s10549-026-07909-5.
PubMed 41642493Bayani J, Kornaga EN, Crozier C, Jang GH, Bathurst L, Kalatskaya I, Trinh QM, Yao CQ, Livingstone J, Boutros PC, Spears M, McPherson JD, Stein LD, Rea D, Bartlett JMS. Identification of Distinct Prognostic Groups: Implications for Patient Selection to Targeted Therapies Among Anti-Endocrine Therapy-Resistant Early Breast Cancers. JCO Precis Oncol. 2019 Dec;3:1-13. doi: 10.1200/PO.18.00373.
PubMed 35100692Noordhoek I, Blok EJ, Meershoek-Klein Kranenbarg E, Putter H, Duijm-de Carpentier M, Rutgers EJT, Seynaeve C, Bartlett JMS, Vannetzel JM, Rea DW, Hasenburg A, Paridaens R, Markopoulos CJ, Hozumi Y, Portielje JEA, Kroep JR, van de Velde CJH, Liefers GJ. Overestimation of Late Distant Recurrences in High-Risk Patients With ER-Positive Breast Cancer: Validity and Accuracy of the CTS5 Risk Score in the TEAM and IDEAL Trials. J Clin Oncol. 2020 Oct 1;38(28):3273-3281. doi: 10.1200/JCO.19.02427. Epub 2020 Jul 24.
PubMed 32706636Derks MGM, Bastiaannet E, van de Water W, de Glas NA, Seynaeve C, Putter H, Nortier JWR, Rea D, Hasenburg A, Markopoulos C, Dirix LY, Portielje JEA, van de Velde CJH, Liefers GJ. Impact of age on breast cancer mortality and competing causes of death at 10 years follow-up in the adjuvant TEAM trial. Eur J Cancer. 2018 Aug;99:1-8. doi: 10.1016/j.ejca.2018.04.009. Epub 2018 Jun 6.
PubMed 29885375Bartlett JM, Brookes CL, Piper T, van de Velde CJ, Stocken D, Lyttle N, Hasenburg A, Quintayo MA, Kieback DG, Putter H, Markopoulos C, Kranenbarg EM, Mallon EA, Dirix LY, Seynaeve C, Rea DW. Do type 1 receptor tyrosine kinases inform treatment choice? A prospectively planned analysis of the TEAM trial. Br J Cancer. 2013 Oct 29;109(9):2453-61. doi: 10.1038/bjc.2013.609. Epub 2013 Oct 3.
PubMed 24091623van de Velde CJ, Rea D, Seynaeve C, Putter H, Hasenburg A, Vannetzel JM, Paridaens R, Markopoulos C, Hozumi Y, Hille ET, Kieback DG, Asmar L, Smeets J, Nortier JW, Hadji P, Bartlett JM, Jones SE. Adjuvant tamoxifen and exemestane in early breast cancer (TEAM): a randomised phase 3 trial. Lancet. 2011 Jan 22;377(9762):321-31. doi: 10.1016/S0140-6736(10)62312-4.
PubMed 21247627
Study at a glance
From the registry record, last updated by the sponsor on 28 Oct 2015. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Randomized Phase III Study Of Exemestane (Aromasin) For 5 Years Versus Tamoxifen For 2.5- 3 Years Followed By Exemestane (Aromasin) For A Total Of 5 Years As Adjuvant Therapy For Postmenopausal, Receptor Positive, Node Negative or Node Positive Breast Cancer Patients
- ClinicalTrials.gov ID
- NCT00036270
- Acronym / sponsor ID
- TEAM / 971-ONC-0028-081
- Conditions
- Breast Neoplasms
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 9,779 participants (actual)
- Lead sponsor
- PfizerIndustry (pharma, biotech, devices)
- Study start
- Aug 2001
- Primary completion
- Oct 2008 (actual)
- Study completion
- Feb 2011 (actual)
- First posted
- 9 May 2002 (estimated)
- Results
- Posted 4 Dec 2009
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
To compare the effects of exemestane for 5 years versus tamoxifen and exemestane given sequentially over 5 years in the adjuvant treatment of postmenopausal women with early breast cancer.
This Pfizer sponsored trial is part of an international collaboration of investigators conducting 7 similar yet independent studies in 9 countries. This study is designed to be part of the larger TEAM trial where the data from these 7 studies will be combined. A pre-specified analysis of the pooled data will be conducted.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| exemestane | Experimental | Drug: exemestane (Aromasin) |
| tamoxifen + exemestane | Experimental | Drug: tamoxifen + exemestane |
Who may qualify
- Ages
- 50 years and older
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Histologically/cytologically confirmed adenocarcinoma of the breast, followed by adequate surgical resection and/or radiotherapy, and/or adjuvant chemotherapy, if indicated.
- Stage T1-3 N0-2 Mo, Any TNM stage BC for whom adjuvant hormonal therapy is being considered.
Key exclusion criteria (7 listed)
- Those patients not deemed to have had potentially curative primary surgical treatment or one of the following criteria:
- Inflammatory breast cancer
- Histologically positive supraclavicular nodes
- Ulceration/infiltration of local skin metastasis
- Neoadjuvant chemotherapy
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| exemestane (Aromasin)Also: aromasinexemestane, orally, 25 mg, for 5 years | Drug | exemestane |
| tamoxifen + exemestanetamoxifen, 20 mg, orally, daily, 2-3 years; followed by exemestane, orally, 25 mg, for a total of 5 years of therapy | Drug | tamoxifen + exemestane |
Primary outcome
Disease Free Survival (DFS): Number of Events (Disease Relapse or Death) From Baseline up to 2.75 Years
Time frame: Baseline (Month 0) up to 2.75 years
Number of events (disease relapse or death) to time of observation for DFS. DFS defined as time from randomization to earliest documentation of disease relapse or death from any cause in postmenopausal, receptor positive, node negative or node positive breast cancer patients for adjuvant treatment with exemestane compared with adjuvant tamoxifen therapy at 2.75 years. Disease relapse: primary tumor recurrence (locoregional or distant) and ipsilateral or contralateral breast cancer (CBC). Intercurrent death: death without disease relapse.
Disease Free Survival (DFS): Number of Events (Disease Relapse or Death) From Baseline up to 5 Years
Time frame: Baseline (Month 0) up to 5 years
Number of events (disease relapse or death) to time of observation for DFS. DFS defined as time from randomization to earliest documentation of disease relapse or death from any cause in postmenopausal, receptor positive, node negative or node positive breast cancer patients for adjuvant treatment with exemestane compared with adjuvant tamoxifen therapy at 5 years. Disease relapse: primary tumor recurrence (locoregional or distant) and ipsilateral or contralateral breast cancer (CBC). Intercurrent death: death without disease relapse.
4 secondary outcomes
Number of Events for Overall Survival (OS)
Time frame: Baseline (Month 0) up to 5 years
Time to New Primary Breast Cancers
Time frame: Baseline (Month 0) up to 5 years
Number of Events for Time to Relapse
Time frame: Baseline (Month 0) up to 5 years
Number of Participants With New Primary Non-breast Cancers
Time frame: Baseline (Month 0) up to 5 years
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 Oct 2015.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 41642493Leblanc A, Beltran-Bless AA, Pond GR, El Emam K, Juwara L, Clemons L, Bayani J, Pilgram L, Pharoah P, Mallon E, Taylor KJ, Markopoulos C, Dirix L, Vandermeer L, Hilton J, Savard MF, Bartlett JMS, Clemons M. Prognostic and predictive performance of PREDICT 2.1, PREDICT v3, and RSClin in node-negative early breast cancer: a TEAM pathology substudy. Breast Cancer Res Treat. 2026 Feb 5;215(3):74. doi: 10.1007/s10549-026-07909-5.
- Derived from this study: PubMed 35100692Bayani J, Kornaga EN, Crozier C, Jang GH, Bathurst L, Kalatskaya I, Trinh QM, Yao CQ, Livingstone J, Boutros PC, Spears M, McPherson JD, Stein LD, Rea D, Bartlett JMS. Identification of Distinct Prognostic Groups: Implications for Patient Selection to Targeted Therapies Among Anti-Endocrine Therapy-Resistant Early Breast Cancers. JCO Precis Oncol. 2019 Dec;3:1-13. doi: 10.1200/PO.18.00373.
- Derived from this study: PubMed 32706636Noordhoek I, Blok EJ, Meershoek-Klein Kranenbarg E, Putter H, Duijm-de Carpentier M, Rutgers EJT, Seynaeve C, Bartlett JMS, Vannetzel JM, Rea DW, Hasenburg A, Paridaens R, Markopoulos CJ, Hozumi Y, Portielje JEA, Kroep JR, van de Velde CJH, Liefers GJ. Overestimation of Late Distant Recurrences in High-Risk Patients With ER-Positive Breast Cancer: Validity and Accuracy of the CTS5 Risk Score in the TEAM and IDEAL Trials. J Clin Oncol. 2020 Oct 1;38(28):3273-3281. doi: 10.1200/JCO.19.02427. Epub 2020 Jul 24.
- Derived from this study: PubMed 29885375Derks MGM, Bastiaannet E, van de Water W, de Glas NA, Seynaeve C, Putter H, Nortier JWR, Rea D, Hasenburg A, Markopoulos C, Dirix LY, Portielje JEA, van de Velde CJH, Liefers GJ. Impact of age on breast cancer mortality and competing causes of death at 10 years follow-up in the adjuvant TEAM trial. Eur J Cancer. 2018 Aug;99:1-8. doi: 10.1016/j.ejca.2018.04.009. Epub 2018 Jun 6.
- Derived from this study: PubMed 24091623Bartlett JM, Brookes CL, Piper T, van de Velde CJ, Stocken D, Lyttle N, Hasenburg A, Quintayo MA, Kieback DG, Putter H, Markopoulos C, Kranenbarg EM, Mallon EA, Dirix LY, Seynaeve C, Rea DW. Do type 1 receptor tyrosine kinases inform treatment choice? A prospectively planned analysis of the TEAM trial. Br J Cancer. 2013 Oct 29;109(9):2453-61. doi: 10.1038/bjc.2013.609. Epub 2013 Oct 3.
- Derived from this study: PubMed 21247627van de Velde CJ, Rea D, Seynaeve C, Putter H, Hasenburg A, Vannetzel JM, Paridaens R, Markopoulos C, Hozumi Y, Hille ET, Kieback DG, Asmar L, Smeets J, Nortier JW, Hadji P, Bartlett JM, Jones SE. Adjuvant tamoxifen and exemestane in early breast cancer (TEAM): a randomised phase 3 trial. Lancet. 2011 Jan 22;377(9762):321-31. doi: 10.1016/S0140-6736(10)62312-4.
- To obtain contact information for a study center near you, click here.Link provided by the sponsor.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Pfizer CT.gov Call Center study director
Pfizer
179 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing exemestane (Aromasin) and tamoxifen + exemestane in people with Breast Neoplasms, run by Pfizer at 179 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 28 Oct 2015. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 179 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 4 Dec 2009). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Disease Free Survival (DFS): Number of Events (Disease Relapse or Death) From Baseline up to 2.75 Years (time frame: Baseline (Month 0) up to 2.75 years). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00036270, which also lists 6 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Oct 2015.