Safety and effectiveness of post-trastuzumab deruxtecan regimens in patients with HER2-positive metastatic breast cancer who discontinued trastuzumab deruxtecan due to interstitial lung disease.

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Title: Safety and effectiveness of post-trastuzumab deruxtecan regimens in patients with HER2-positive metastatic breast cancer who discontinued trastuzumab deruxtecan due to interstitial lung disease.
Authors: Tsurutani J; Advanced Cancer Translational Research Institute, Showa Medical University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan. Electronic address: tsurutaj@med.showa-u.ac.jp., Nozawa K; Department of Advanced Clinical Research and Development, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi, 467-8601, Japan., Mukohara T; Department of Medical Oncology, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan., Taira T; Department of Oncology, Sagara Hospital, 3-31 Matsubaracho, Kagoshima, Kagoshima, 892-0833, Japan., Yoshimura A; Department of Breast Oncology, Aichi Cancer Center, 1-1 Kanokoden, Chikusa-ku, Nagoya, Aichi, 454-8681, Japan., Nagai SE; Division of Breast Oncology, Saitama Cancer Center, 780 Komuro, Inamachi, Kita-Adachi-gun, Saitama, 362-0806, Japan., Hashimoto J; Division of Medical Oncology, St. Luke's International Hospital, 9-1 Akashi-cho, Chuo-ku, Tokyo, 104-8560, Japan., Matsuura K; Department of Breast Oncology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan., Mizuno T; Department of Medical Oncology, Mie University Hospital, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan., Shinden Y; Department of Breast and Thyroid Surgery, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima, Kagoshima, 890-8544, Japan., Yamamoto M; Department of Breast Oncology, Hokkaido Cancer Center, 2-3-54 Kikusui shi-jo, Shiroishi-ku, Sapporo, Hokkaido, 003-0804, Japan., Takano T; Department of Breast Medical Oncology, Cancer Institute Hospital of Japanese Foundation for Cancer Research, 3-8-31 Ariake, Koto-ku, Tokyo, 135-8550, Japan., Wakahara M; Department of Breast and Endocrine Surgery, Tottori University Hospital, 36-1 Nishi-cho, Yonago, Tottori, 683-8504, Japan., Terakawa H; Department of Breast Surgery, Kanazawa University Hospital, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8641, Japan., Yamanaka T; Department of Breast Surgery and Oncology, Kanagawa Cancer Center, 2-3-2 Nakao, Asahi-ku, Yokohama, Kanagawa, 241-8515, Japan., Kojima Y; Institute for Clinical Genetics and Genomics, Showa Medical University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan., Nakayama T; Department of Breast and Endocrine Surgery, Osaka International Cancer Institute, 3-1-69 Otemae, Chuo-ku, Osaka, Osaka, 541-8567, Japan., Hirakawa Y; Oncology Medical Science Department I, Daiichi Sankyo Co., Ltd., 3-5-1 Nihonbashi-honcho, Chuo-ku, Tokyo, 103-8426, Japan., Shiosakai K; Data Intelligence Department, Daiichi Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo, 140-8710, Japan., Iwata H; Department of Advanced Clinical Research and Development, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi, 467-8601, Japan.
Source: Breast (Edinburgh, Scotland) [Breast] 2026 Apr; Vol. 86, pp. 104722. Date of Electronic Publication: 2026 Feb 04.
Publication Type: Journal Article
Journal Info: Publisher: Elsevier Country of Publication: Netherlands NLM ID: 9213011 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1532-3080 (Electronic) Linking ISSN: 09609776 NLM ISO Abbreviation: Breast Subsets: MEDLINE
Database: MEDLINE Ultimate
Description
ISSN:1532-3080
DOI:10.1016/j.breast.2026.104722