イワモト　タカユキ   Takayuki Iwamoto   岩本　高行    所属   川崎医科大学  医学部 臨床医学　乳腺甲状腺外科学    職種   講師
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Hormonal Therapy Resistant Estrogen-receptor Positive Metastatic Breast Cancer Cohort (HORSE-BC) Study : Current Status of Treatment Selection in Japan.
掲載誌名	正式名：Acta medica Okayama 略　 称：Acta Med Okayama ISSNコード：0386300X/0386300X
掲載区分	国外
巻・号・頁	72(4),pp.369-374
著者・共著者	Takayuki Iwamoto, Naruto Taira, Tomomi Fujisawa, Kazuhiro Araki, Kentaro Sakamaki, Takafumi Sangai, Yuichiro Kikawa, Tadahiko Shien, Shintaro Takao, Masako Sato, Yoshinari Goto, Takashi Yoshida, Masato Takahashi, Tomohiko Aihara, Hirofumi Mukai
担当区分	筆頭著者,責任著者
発行年月	2018/08
概要	The Hormonal therapy resistant estrogen-receptor positive metastatic breast cancer cohort (HORSE-BC) study is a multicenter observational study evaluating the efficacy and safety of secondary endocrine therapy (ET) for postmenopausal cases of metastatic breast cancer (MBC) with poor response to primary ET. In this initial report we analyze the HORSE-BC baseline data to clarify the current status of treatment selection for MBC in Japan. Baseline data for the 50 patients enrolled in HORSE-BC were analyzed, including patient characteristics, types of secondary ET, and reasons for selecting secondary ET. Postoperative recurrence was detected in 84% of patients (42/50) and de novo stage IV breast cancer in 16% (8/50). Forty-one patients (41/50; 82%) received fulvestrant, 5 patients (10%) received selective estrogen receptor modulators (SERMs), 3 patients (6%) received ET plus a mammalian target of rapamycin (mTOR) inhibitor, and 1 patient received an aromatase inhibitor (AI) as the secondary ET. Forty-five patients selected their secondary ET based on its therapeutic effect, while 14 patients selected it based on side effects. Most patients with progression after primary ET selected fulvestrant as the secondary ET based on its therapeutic and side effects. We await the final results from the HORSE-BC study.
DOI	10.18926/AMO/56172
PMID	30140084