Real-world uptake of gBRCA testing as a companion diagnostic for olaparib in patients with high-risk HER2-negative early breast cancer in Japan: a cross-sectional multicenter study (BRCAwareness).

Saved in:
Bibliographic Details
Title: Real-world uptake of gBRCA testing as a companion diagnostic for olaparib in patients with high-risk HER2-negative early breast cancer in Japan: a cross-sectional multicenter study (BRCAwareness).
Authors: Taji T; Department of Breast Surgery, Kansai Medical University, 3-1 Shinmachi 2 Chome, Hirakata, Osaka, 573-1191, Japan. taji.tom@kmu.ac.jp., Uemura Y; Laboratory of Biostatistics, Department of Data Science, Center for Clinical Sciences, Japan Institute for Health Security, 1-21-1 Toyama, Shinjuku-ku, Tokyo, 162-8655, Japan., Kimura Y; Department of Breast Surgical Oncology, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto-ku, Tokyo, 135-8550, Japan., Maeda N; Department of Gastroenterological, Breast and Endocrine Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1, Minami Kogushi, , Ube, Yamaguchi, 755-8505, Japan., Ito A; Department of Breast Surgery, Akita Red Cross Hospital, 222-1 Kamikitatesarutanawashirosawa, Akita, Akita, 010-1495, Japan., Seki H; Department of Breast Surgery, National Hospital Organization Tokyo Medical Center, 2-5-1 Higashigaoka Meguro-ku, Tokyo, 152-8902, Japan., Takabatake D; Department of Breast Surgery, National Hospital Organization Shikoku Cancer Center, 160 Minamiumemotomachi, Matsuyama, Ehime, 791- 0245, Japan., Harao M; Department of Breast Oncology, Jichi Medical University, 3311-1 Yakushiji, , Shimotsuke, Tochigi, 329-0498, Japan., Nakamoto S; Department of Breast and Endocrine Surgery, Okayama University Hospital, 2-5-1 Shikata-cho, Kitaku, Okayama, 700-8558, Japan., Matsunuma R; Department of Breast Surgery, Shizuoka General Hospital, 4-27-1 Kita-ando, Aoi-ku, Shizuoka, 420-8527, Japan., Koganezawa C; Department of Breast Oncology, Hokkaido Cancer Center, 2-3-54 Kikusui 4-jo, Shiroishi-ku, Sapporo, Hokkaido, 003-0804, Japan., Iwamoto T; Department of Breast and Thyroid Surgery, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan., Mukai H; Department of Medical Oncology, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan., Kikawa Y; Department of Breast Surgery, Kansai Medical University, 3-1 Shinmachi 2 Chome, Hirakata, Osaka, 573-1191, Japan.
Source: Breast cancer (Tokyo, Japan) [Breast Cancer] 2026 Jul; Vol. 33 (4), pp. 919-927. Date of Electronic Publication: 2026 May 23.
Publication Type: Journal Article; Multicenter Study
Journal Info: Publisher: Maruzen Co Country of Publication: Japan NLM ID: 100888201 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1880-4233 (Electronic) Linking ISSN: 13406868 NLM ISO Abbreviation: Breast Cancer Subsets: MEDLINE
Database: MEDLINE Ultimate
Description
ISSN:1880-4233
DOI:10.1007/s12282-026-01867-y