AZN, Daiichi's Enhertu Gets FDA Nod for First-Line Breast Cancer (Revised)

Core Insights - AstraZeneca PLC and Daiichi Sankyo received FDA approval for Enhertu as a first-line treatment for HER2-positive breast cancer, in combination with Roche's Perjeta [2][7] - The approval is based on the DESTINY-Breast09 study, which showed a significant improvement in progression-free survival (PFS) [5][8] - AstraZeneca will pay Daiichi Sankyo a $150 million milestone payment following this approval [3][7] Regulatory Approval - Enhertu was reviewed under the FDA's real-time oncology review (RTOR) program [3] - The drug is already approved in over 85 countries for second-line treatment of HER2-positive breast cancer and for other cancers [3] Clinical Study Results - The DESTINY-Breast09 study demonstrated a median PFS of 40.7 months for the Enhertu-Perjeta combination, compared to 26.9 months for the standard regimen [5][8] - The combination reduced the risk of disease progression by 44% compared to the current standard treatment [5][7] Market Performance - Over the past year, AstraZeneca's shares increased by 36.3%, outperforming the industry average rise of 12.1% [4]