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Treating HR+/HER2− breast cancer in premenopausal Asian women: Asian Breast Cancer Cooperative Group 2019 Consensus and position on ovarian suppression

Breast cancer research and treatment, 2019-10, Vol.177 (3), p.549-559 [Peer Reviewed Journal]

Springer Science+Business Media, LLC, part of Springer Nature 2019 ;COPYRIGHT 2019 Springer ;Breast Cancer Research and Treatment is a copyright of Springer, (2019). All Rights Reserved. ;ISSN: 0167-6806 ;EISSN: 1573-7217 ;DOI: 10.1007/s10549-019-05318-5 ;PMID: 31270763

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Title:
Treating HR+/HER2− breast cancer in premenopausal Asian women: Asian Breast Cancer Cooperative Group 2019 Consensus and position on ovarian suppression
Author: Yeo, Winnie ; Ueno, Takayuki ; Lin, Ching-Hung ; Liu, Qiang ; Lee, Kyung-Hun ; Leung, Roland ; Naito, Yoichi ; Park, Yeon Hee ; Im, Seock-Ah ; Li, Huiping ; Yap, Yoon Sim ; Lu, Yen-Shen
Subjects: Age Factors ; Antineoplastic Agents, Hormonal - administration & dosage ; Antineoplastic Agents, Hormonal - adverse effects ; Antineoplastic Agents, Hormonal - therapeutic use ; Antineoplastic Combined Chemotherapy Protocols - adverse effects ; Antineoplastic Combined Chemotherapy Protocols - therapeutic use ; Aromatase ; Asian Continental Ancestry Group ; Breast cancer ; Breast Neoplasms - diagnosis ; Breast Neoplasms - drug therapy ; Breast Neoplasms - etiology ; Cancer ; Cancer therapies ; Care and treatment ; Chemotherapy ; Clinical trials ; Clinical Trials as Topic ; Decision making ; Epidermal growth factor ; ErbB-2 protein ; Evidence-based medicine ; Female ; Health risk assessment ; Humans ; Medicine ; Medicine & Public Health ; Menopause ; Neoplasm Grading ; Neoplasm Staging ; Oncology ; Ovarian cancer ; Ovariectomy ; Patients ; Pituitary (anterior) ; Post-menopause ; Postmenopausal women ; Premenopause ; Receptor, ErbB-2 - genetics ; Receptor, ErbB-2 - metabolism ; Receptors, Estrogen - genetics ; Receptors, Estrogen - metabolism ; Receptors, Progesterone - genetics ; Receptors, Progesterone - metabolism ; Reproductive status ; Review ; Risk groups ; Tamoxifen ; Treatment Outcome ; Voting ; Womens health
Is Part Of: Breast cancer research and treatment, 2019-10, Vol.177 (3), p.549-559
Description: Purpose Breast cancer in young Asian women has distinctive clinicopathological characteristics; hence, we question the universal generalizability of treatment recommendations based on data from predominantly non-Asian postmenopausal women. Methods The Asian Breast Cancer Cooperative Group (ABCCG) reviewed current ESO-ESMO and St. Gallen recommendations for treating hormone receptor positive/human epidermal growth factor receptor 2 negative (HR+/HER2−) breast cancer in premenopausal women. Points disputed by ≥ 3/12 members were discussed, and statements on contentious issues formulated for anonymous voting; consensus required a ≥ 75% majority. Results The ABCCG contends that: (1) Trials in premenopausal women are not only necessary, but also worthwhile if performed separately from others that also enroll postmenopausal participants. (2) Not all premenopausal women with HR+ early breast cancer need adjuvant ovarian function suppression (OFS). (3) Certain clinical factors might influence decision-making about prescribing OFS. (4) For early HR+/HER2− breast cancer in premenopausal patients with OFS, tamoxifen is preferred for intermediate-risk cases; for high risk, near-consensus supported aromatase inhibitor, despite no clear overall survival benefit versus tamoxifen. (5) Oncotype DX Breast Recurrence Score ® has different treatment implications in patients aged ≤ 50 versus > 50 years. (6) High-risk patients (if premenopausal after chemotherapy) should receive adjuvant chemotherapy and OFS plus aromatase inhibitor. (7) For patients with advanced disease receiving OFS on a backbone of tamoxifen, gonadotrophin-releasing hormone agonists may be given 12-weekly. (8) For premenopausal women who decline OFS or oophorectomy, tamoxifen alone is still an option but is considered less effective; other monotherapies are also less effective than OFS plus such treatments. Conclusion Premenopausal Asian women with breast cancer have unique disease characteristics and may benefit from treatment that differs somewhat from international guidelines. Given the great diversity of patients and clinical settings worldwide, the ABCCG advocates evidence-based yet flexible and individualized use of all potential options to improve breast cancer outcomes.
Publisher: New York: Springer US
Language: English
Identifier: ISSN: 0167-6806
EISSN: 1573-7217
DOI: 10.1007/s10549-019-05318-5
PMID: 31270763
Source: AUTh Library subscriptions: ProQuest Central
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Treating HR+/HER2− breast cancer in premenopausal Asian women: Asian Breast Cancer Cooperative Group 2019 Consensus and position on ovarian suppression

Springer Science+Business Media, LLC, part of Springer Nature 2019 ;COPYRIGHT 2019 Springer ;Breast Cancer Research and Treatment is a copyright of Springer, (2019). All Rights Reserved. ;ISSN: 0167-6806 ;EISSN: 1573-7217 ;DOI: 10.1007/s10549-019-05318-5 ;PMID: 31270763

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