As Seagen Inc. preps for a merger, the U.S. FDA awarded accelerated approval to the company’s big-selling Padcev (enfortumab vedotin). The approval is for a combination therapy with Merck & Co. Inc.’s Keytruda (pembrolizumab) as a first-line treatment for adults with locally advanced or metastatic urothelial cancer who are not eligible for cisplatin-containing chemotherapy.