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Published in: International Journal of Clinical Oncology 2/2015

01-04-2015 | Review Article

Clinical benefit of sequential use of endocrine therapies for metastatic breast cancer

Authors: Hirotaka Iwase, Yutaka Yamamoto

Published in: International Journal of Clinical Oncology | Issue 2/2015

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Abstract

Sequential use of endocrine agents is common in estrogen receptor (ER)-positive metastatic breast cancer (MBC). In premenopausal women with MBC, tamoxifen and/or a luteinizing hormone-releasing hormone (LH-RH) agonist are options for endocrine treatment. Meta-analysis showed that the combination of the two agents is superior to either monotherapy. Under ovarian ablation or function-suppression, an agent used to treat postmenopausal women, such as the aromatase inhibitor (AI), fulvestrant, becomes possible as a subsequent therapy. In postmenopausal women, endocrine treatment options are widely available and an optimal sequence has not yet to be determined. Options for first-line therapy of metastatic disease include an AI for women who have received adjuvant tamoxifen, or tamoxifen for patients who have received adjuvant AI. In addition, data suggest that fulvestrant is a promising therapeutic option that has proven efficacy in the treatment of postmenopausal women with MBC. Other agents that may be used in the sequence include a steroidal AI or a progestin. Furthermore, estrogen additive therapy by with diethylstilbestrol or ethinylestradiol has recently been revived and showed a high response rate as a salvage endocrine therapy, although its mechanism of action is still unclear. Thus, sequential use of endocrine therapies, especially the use of a subsequent therapy with a different mechanism of action to the prior therapy, has a beneficial effect in maintaining a good quality of life and extending survival for MBC with hormone responsiveness.
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Metadata
Title
Clinical benefit of sequential use of endocrine therapies for metastatic breast cancer
Authors
Hirotaka Iwase
Yutaka Yamamoto
Publication date
01-04-2015
Publisher
Springer Japan
Published in
International Journal of Clinical Oncology / Issue 2/2015
Print ISSN: 1341-9625
Electronic ISSN: 1437-7772
DOI
https://doi.org/10.1007/s10147-015-0793-8

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International Journal of Clinical Oncology 2/2015 Go to the issue
Webinar | 19-02-2024 | 17:30 (CET)

Keynote webinar | Spotlight on antibody–drug conjugates in cancer

Antibody–drug conjugates (ADCs) are novel agents that have shown promise across multiple tumor types. Explore the current landscape of ADCs in breast and lung cancer with our experts, and gain insights into the mechanism of action, key clinical trials data, existing challenges, and future directions.

Dr. Véronique Diéras
Prof. Fabrice Barlesi
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