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TOKYO and BOTHELL, Wash., Feb. 12, 2021 /PRNewswire/ -- Astellas Pharma Inc. (TSE: 4503, President and CEO: Kenji Yasukawa, Ph.D., "Astellas") and Seagen Inc. (Nasdaq: SGEN) today announced primary results from the phase 3 EV-301 trial comparing PADCEV
® (enfortumab vedotin-ejfv) 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. At the time of pre-specified interim analysis, patients who received PADCEV in the trial lived a median of 3.9 months longer than those who received chemotherapy. Median overall survival was 12.9 vs. 9.0 months, respectively (HR=0.70 [95 percent Confidence Interval (CI): 0.56-0.89], p=0.001). For patients in the PADCEV arm of the trial, maculopapular rash, fatigue and decreased neutrophil count were the most frequent Grade 3 or greater treatment-related adverse events (TRAEs) occurring in more than 5 percent of patients.