Trastuzumab Deruxtecan plus Pertuzumab Becomes First-Line Standard for HER2‑Positive Metastatic Breast Cancer: Clinical Implications of the DESTINY‑Breast09 Approval
The FDA has approved trastuzumab deruxtecan with pertuzumab as first-line therapy for unresectable or metastatic HER2‑positive breast cancer after DESTINY‑Breast09 showed a large PFS benefit versus standard THP; safety and maintenance strategy questions remain.