Trastuzumab Deruxtecan (T-DXd) in metastatic breast cancer with different HER2 expression levels: a real-world effectiveness and safety study

In this study, we aimed to investigate the effectiveness and safety of T-DXd in different HER2 expression patients in real-word setting.本研究旨在探讨真实世界研究场景下，不同人类表皮生长因子受体2（Human Epidermal Growth Factor Receptor 2, HER2）表达水平患者应用德曲妥珠单抗（T-DXd）的有效性与安全性。