Randomized Phase III Study Of Exemestane (Aromasin) For 5 Years Versus Tamoxifen for 2.5 to 3 Years Followed By Exemestane

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. 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.

Timeline

Start

2001-08

Primary completion

2008-10

Completion

2011-02

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.
• Bayani 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.
• Noordhoek 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.
• Derks 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.
• Bartlett 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.
• van 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.

Drugs

Indications