Neoadjuvant endocrine therapy in breast cancer

The clinical benefits of endocrine therapy for patients with hormonosensitive breast cancer are well established. For many years, five years’ treatment with tamoxifen was the gold standard of adjuvant treatment. The recent development of new endocrine agents provides physicians with the opportunity...

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Bibliographic Details
Published in:Breast (Edinburgh) 2006-02, Vol.15 (1), p.9-19
Main Authors: Abrial, C., Mouret-Reynier, M.-A., Curé, H., Feillel, V., Leheurteur, M., Lemery, S., Le Bouëdec, G., Durando, X., Dauplat, J., Chollet, P.
Format: Article
Language:English
Subjects:
Anastrozole
Antineoplastic Agents, Hormonal - administration & dosage
Antineoplastic Agents, Hormonal - therapeutic use
Aromatase Inhibitors - administration & dosage
Aromatase Inhibitors - therapeutic use
Breast cancer
Breast Neoplasms - drug therapy
Breast Neoplasms - surgery
Clinical Trials as Topic
Drug Administration Schedule
Endocrine therapy
Exemestane
Female
Humans
Letrozole
Neoadjuvant Therapy
Receptors, Estrogen - analysis
Tamoxifen
Tamoxifen - administration & dosage
Tamoxifen - therapeutic use
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Summary:The clinical benefits of endocrine therapy for patients with hormonosensitive breast cancer are well established. For many years, five years’ treatment with tamoxifen was the gold standard of adjuvant treatment. The recent development of new endocrine agents provides physicians with the opportunity to take a more effective therapeutic approach. Nevertheless, the success of neoadjuvant endocrine therapy is much more recent and less frequently reported in the literature. This article reviews the studies published on neoadjuvant endocrine treatment (tamoxifen and aromatase inhibitors). According to the literature, neoadjuvant endocrine therapy seems to be effective and well tolerated. The newer generation of aromatase inhibitors (letrozole, anastrozole, exemestane) appear to result in better overall response rates and more conservative surgery than tamoxifen. Patients with an ER Allred score of 6 and over are most likely to respond and gain clinical benefit. The optimal duration of neoadjuvant therapy has not yet been investigated in detail. These preliminary results are interesting and should be confirmed by further studies.
ISSN:0960-9776
1532-3080
DOI:10.1016/j.breast.2005.07.009