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© The Author 2007. Published by Oxford University Press.
EDITORIALS |
Tamoxifen: An Enduring Star
Affiliations of authors: Scientific Director's Office (UV) and Divisions of Chemoprevention (AD) and Epidemiology and Biostatistics (PM), European Institute of Oncology, Milan, Italy; Division of Medical Oncology, Galliera Hospital, Genoa, Italy (AD)
Correspondence to: Umberto Veronesi, MD, Scientific Director's Office, European Institute of Oncology, via Ripamonti, 435, 20141 Milan, Italy (e-mail: umberto.veronesi@ieo.it).
| The first 150 words of the full text of this article appear below. |
In this issue of the Journal, two placebo-controlled studies (1,2) provide long-term results from trials of tamoxifen for the primary prevention of breast cancer in high-risk women. Cuzick et al. (1) expand on the first International Breast Cancer Intervention Study (IBIS-I), showing after a median follow-up of 8 years and 337 breast cancer events that tamoxifen statistically significantly reduces breast cancer by 29% with no attenuation of benefit after completion of the 5-year treatment schedule. Importantly, their data reveal a greater benefit from tamoxifen on estrogen receptor (ER)positive disease in the follow-up period and an appreciable tapering of adverse events after the active treatment period, such that the riskbenefit ratio improved with longer follow-up. Similarly, Powles et al. (2) update the pioneering Royal Marsden trial after a median follow-up of 13 years and 186 events, reporting a nonstatistically significant 22% reduction of
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J Natl Cancer Inst 2007 99: 272-282.
J Natl Cancer Inst 2007 99: 257.
J Natl Cancer Inst 2007 99: 257.
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