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

Nachrichtenquelle: Business Wire (engl.)
18.09.2020, 12:45  |  117   |   |   

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<0.00001).

For patients in the PADCEV arm of the trial, adverse events were consistent with those listed in the U.S. Prescribing Information, with rash, hyperglycemia, decreased neutrophil count, fatigue, anemia and decreased appetite as the most frequent Grade 3 or greater adverse event(s) occurring in more than 5 percent of patients. Data from EV-301 will be submitted for presentation at an upcoming scientific congress. Patients in the chemotherapy arm of the trial will be offered the opportunity to receive PADCEV.

The results will be submitted to the U.S. Food and Drug Administration (FDA) as the confirmatory trial following the drug’s accelerated approval in 2019. EV-301 is also intended to support global registrations.

“These survival results from the confirmatory trial for PADCEV are welcome news for patients whose cancer has progressed after platinum-based chemotherapy and immunotherapy,” said Roger Dansey, M.D., Chief Medical Officer at Seattle Genetics. “We continue to explore PADCEV’s activity across the spectrum of urothelial cancer including its potential for use in earlier lines of therapy.”

“EV-301 is the first randomized trial to show overall survival results compared to chemotherapy in patients with locally advanced or metastatic urothelial cancer who previously have received platinum-based treatment and a PD-1 or PD-L1 inhibitor, and we are encouraged by the potential this may have in helping patients who have otherwise limited alternatives,” said Andrew Krivoshik, M.D., Ph.D., Senior Vice President and Oncology Therapeutic Area Head, Astellas. “We look forward to discussing these results with global health authorities.”

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