[Chinese expert consensus on the management of clinical pathway and adverse events of trastuzumab deruxtecan (2024 edition)].

Trastuzumab deruxtecan (T-DXd) is one of the new generation antibody-drug conjugates (ADCs) targeting human epidermal growth factor receptor 2 (HER-2) with bystander effect. T-DXd can not only significantly improve the survival of HER-2-positive advanced breast cancer patients, but also enable advanced breast cancer patients with low HER-2 expression to benefit from HER-2-targeted therapy. T-DXd has been approved by the National Medical Products Administration (NMPA) for the treatment of HER-2-positive or HER-2-low breast cancer patients. It is foreseeable that T-DXd will be widely used in clinical practice in the future. However, T-DXd has also shown different safety characteristics compared to previous HER-2 targeted drugs in clinical trials. How to manage T-DXd adverse events more reasonably and fully utilize the efficacy of T-DXd is an urgent clinical problem. Based on the existing clinical evidence and guideline consensus, combined with clinical practice experience, the expert group finally reached the consensus of clinical care pathway and adverse reaction management of trastuzumab deruxtecan after many discussions. This consensus content includes the clinical use method of T-DXd, pre-treatment patient education, and management of common or noteworthy adverse events of T-DXd. The adverse events include infusion related adverse events, digestive system adverse events (nausea/vomiting, constipation, diarrhea, and decreased appetite), hematological adverse events (neutropenia, febrile neutropenia, anemia, thrombocytopenia), respiratory adverse events (interstitial lung disease/pneumonia), cardiovascular adverse events (decreased left ventricular ejection fraction), adverse events in liver function (elevated transaminases) and other common adverse events (alopecia, fatigue, etc). This consensus focuses on the prevention of adverse events, dose adjustment and treatment when adverse events occur, and recommendations for patients' lifestyle, aiming to improve clinicians' understanding of T-DXd and provide practical guidance for clinical oncologists on T-DXd clinical management.德曲妥珠单抗（T-DXd）是靶向人表皮生长因子受体2（HER-2）的新一代抗体药物偶联物，具备旁观者效应。T-DXd不仅可以大幅改善HER-2阳性晚期乳腺癌患者的生存，还可以使HER-2低表达晚期乳腺癌患者从HER-2靶向治疗中获益。T-DXd已被国家药品监督管理局批准用于治疗HER-2阳性和HER-2低表达乳腺癌患者，未来T-DXd在临床实践中会很快被广泛应用。然而，T-DXd在临床试验中也显示出了与既往抗HER-2靶向药不同的安全性特征，如何更合理地管理T-DXd不良事件，充分发挥T-DXd疗效是当下临床亟需解决的问题。德曲妥珠单抗临床管理路径及不良反应处理共识专家组基于现有的临床循证证据和指南共识，结合临床实践经验，经过多次研讨，最终达成德曲妥珠单抗临床管理路径及不良反应处理中国专家共识（2024版）。共识内容包括T-DXd的临床使用方法、治疗前患者教育和T-DXd常见及需要关注的不良事件及管理等方面，其中T-DXd常见及需要关注的不良事件涵盖了输液相关不良事件、消化系统不良事件（恶心/呕吐、便秘、腹泻和食欲下降）、血液学不良事件（中性粒细胞减少、发热性中性粒细胞减少、贫血、血小板减少）、呼吸系统不良事件（间质性肺病/肺炎）、心血管不良事件（左心射血分数下降）、肝功能不良事件（转氨酶升高）以及其他常见不良事件（脱发、疲乏）等。共识重点介绍了各不良事件的预防、发生不良事件时的剂量调整和治疗以及对患者生活方式的建议，旨在提高临床医师对T-DXd的认识水平，为广大临床肿瘤医师提供T-DXd临床管理及不良事件处理的实践指导。.