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	Prognostic value of the 21-Gene Breast Recurrence Score® assay for hormone receptor-positive/human epidermal growth factor 2-negative advanced breast cancer: subanalysis from Japan Breast Cancer Research Group-M07 (FUTURE trial).
掲載誌名	正式名：Breast cancer research and treatment 略　 称：Breast Cancer Res Treat ISSNコード：15737217/01676806
掲載区分	国外
巻・号・頁	208(2),pp.253-262
著者・共著者	Takayuki Iwamoto, Naoki Niikura, Kenichi Watanabe, Takashi Takeshita, Yuichiro Kikawa, Kokoro Kobayashi, Nobutaka Iwakuma, Takuho Okamura, Takayuki Kobayashi, Yuriko Katagiri, Masahiro Kitada, Nobumoto Tomioka, Yasuo Miyoshi, Hideo Shigematsu, Minoru Miyashita, Hiroshi Ishiguro, Norikazu Masuda, Shigehira Saji
担当区分	筆頭著者
発行年月	2024/06
概要	PURPOSE:This study aimed to determine whether the 21-Gene Breast Recurrence Score® assay from primary breast tissue predicts the prognosis of patients with hormone receptor-positive and human epidermal growth factor 2-negative advanced breast cancers (ABCs) treated with fulvestrant monotherapy (Group A) and the addition of palbociclib combined with fulvestrant (Group B), which included those who had progression in Group A from the Japan Breast Cancer Research Group-M07 (FUTURE trial).METHODS:Progression-free survival (PFS) and overall survival (OS) were compared using the log-rank test and Cox regression analysis based on original recurrence score (RS) categories (Low: 0-17, Intermediate: 18-30, High: 31-100) by treatment groups (A and B) and types of ABCs (recurrence and de novo stage IV).RESULTS:In total, 102 patients [Low: n = 44 (43.1%), Intermediate: n = 38 (37.5%), High: n = 20 (19.6%)] in Group A, and 45 in Group B, who had progression in Group A were analyzed. The median follow-up time was 23.8 months for Group A and 8.9 months for Group B. Multivariate analysis in Group A showed that low-risk [hazard ratio (HR) 0.15, 95% confidence interval (CI) 0.04-0.53, P = 0.003] and intermediate-risk (HR 0.22, 95% CI 0.06-0.78) with de novo stage IV breast cancer were significantly associated with better prognosis compared to high-risk. However, no significant difference was observed among patients with recurrence. No prognostic significance was observed in Group B.CONCLUSION:We found a distinct prognostic value of the 21-Gene Breast Recurrence Score® assay by the types of ABCs and a poor prognostic value of the high RS for patients with de novo stage IV BC treated with fulvestrant monotherapy. Further validations of these findings are required.
DOI	10.1007/s10549-024-07414-7
PMID	38922548