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Seattle Genetics and Astellas Announce PADCEV® (enfortumab vedotin-ejfv) Significantly Improved Overall Survival in Phase 3 Trial in Previously Treated Locally Advanced or Metastatic Urothelial Cancer

Published: 2020-09-18 10:45:00 ET
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- Trial Stopped Early Due to Positive Results at Planned Interim Analysis -

- Data Intended to Support Global Registrations and Convert Accelerated to Regular Approval in U.S. -

BOTHELL, Wash. & TOKYO--(BUSINESS WIRE)-- Seattle Genetics, Inc. (Nasdaq:SGEN) and Astellas Pharma Inc. (TSE: 4503, President and CEO: Kenji Yasukawa, Ph.D., “Astellas”) today announced that a phase 3 trial of PADCEV® (enfortumab vedotin-ejfv) met its primary endpoint of overall survival compared to chemotherapy. The results were reviewed by an independent Data Monitoring Committee following a planned interim analysis. The global EV-301 clinical trial compared PADCEV to chemotherapy in adult patients with locally advanced or metastatic urothelial cancer who were previously treated with platinum-based chemotherapy and a PD-1/L1 inhibitor.

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PADCEV® (enfortumab vedotin-ejfv) (Photo: Business Wire)

PADCEV® (enfortumab vedotin-ejfv) (Photo: Business Wire)

In the trial, PADCEV significantly improved overall survival (OS), with a 30 percent reduction in risk of death (Hazard Ratio [HR]=0.70; [95% Confidence Interval (CI): 0.56, 0.89]; p=0.001). PADCEV also significantly improved progression-free survival (PFS), a secondary endpoint, with a 39 percent reduction in risk of disease progression or death (HR=0.61 [95% CI: 0.50, 0.75]; p