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PADCEV™ Plus Keytruda® Significantly Improves Survival for Patients with Muscle-Invasive Bladder Cancer Regardless of Cisplatin Eligibility
Astellas Pharma Inc. (TSE: 4503, President and CEO: Naoki Okamura, "Astellas") and Pfizer Inc. (NYSE: PFE) today announced positive topline results from an interim analysis of the Phase 3 EV-304 clinical trial (also known as KEYNOTE-B15) for PADCEV™ (enfortumab vedotin), a Nectin-4 directed antibody-drug conjugate, in combination with Keytruda® (pembrolizumab), a PD-1 inhibitor. This pivotal study is evaluating the combination as neoadjuvant and adjuvant treatment (before and after surgery) vers
About this update from Pfizer, Inc.
[{"type":"list","items":[{"val":[{"type":"text","content":"PADCEV plus Keytruda is the first and only regimen without platinum-based chemotherapy to improve event-free and overall survival when used before and after surgery in cisplatin-eligible patients with muscle-invasive bladder cancer ","length":231,"tagName":"p"}]},{"val":[{"type":"text","content":"Positive EV-304 data, combined with the recent unprecedented results from the EV-303 trial, highlight the potential of this combination to become a new platinum-free standard of care in an earlier stage of bladder cancer","length":220,"tagName":"p"}]},{"val":[{"type":"text","content":"Results from the Phase 3 EV-304 trial will be presented at an upcoming medical meeting and discussed with global health authorities for potential regulatory filings ","length":164,"tagName":"p"}]}],"tagName":"ul","bulletedList":true,"length":615,"olType":false},{"type":"text","content":"TOKYO and NEW YORK, Dec. 17, 2025 /PRNewswire/ -- Astellas Pharma Inc. (TSE: 4503, President and CEO: Naoki Okamura, "Astellas") and Pfizer Inc. (NYSE: PFE) today announced positive topline results from an interim analysis of the Phase 3 EV-304 clinical trial (also known as KEYNOTE-B15) for PADCEV™ (enfortumab vedotin), a Nectin-4 directed antibody-drug conjugate, in combination with Keytruda® (pembrolizumab), a PD-1 inhibitor. This pivotal study is evaluating the combination as neoadjuvant and adjuvant treatment (before and after surgery) versus standard of care neoadjuvant chemotherapy (gemcitabine and cisplatin) in patients with muscle-invasive bladder cancer (MIBC) who are eligible for cisplatin-based chemotherapy. The trial met its primary endpoint, demonstrating clinically meaningful and statistically significant improvements in event-free survival (EFS), and overall survival (OS), a key secondary endpoint.","length":941,"tagName":"p"},{"type":"image","alt":"Astellas stands on the forefront of healthcare change to turn innovative science into value for patients.(PRNewsFoto/Astellas Pharma Inc.) (PRNewsfoto/Astellas Pharma Inc.)","displaySize":"","headline":null,"caption":"Astellas stands on the forefront of healthcare change to turn innovative science into value for patients.(PRNewsFoto/Astellas Pharma Inc.) (PRNewsfoto/Astellas Pharma Inc.)","className":"","disableSlideshowImg":false,"size":{"original":{"width":400,"heig...