ENHERTU® Plus Pertuzumab Granted Priority Review in the U.S. as First-Line Treatment for Patients with HER2 Positive Metastatic Breast Cancer

TOKYO & BASKING RIDGE, N.J.--(BUSINESS WIRE)--Sep 24, 2025--

Daiichi Sankyo (TSE: 4568) and AstraZeneca’s (LSE/STO/Nasdaq: AZN) supplemental Biologics License Application (sBLA) for ENHERTU ® (fam-trastuzumab deruxtecan-nxki) in combination with pertuzumab has been accepted and granted Priority Review in the U.S. for the first-line treatment of adult patients with unresectable or metastatic HER2 positive breast cancer.

ENHERTU is a specifically engineered HER2 directed DXd antibody drug conjugate (ADC) discovered by Daiichi Sankyo and being jointly developed and commercialized by Daiichi Sankyo and AstraZeneca.

The U.S. Food and Drug Administration (FDA) grants Priority Review to applications for medicines that, if approved, would offer significant improvements over available treatment