NORTHBROOK, Ill., Sept. 6, 2017 /PRNewswire/ -- Astellas Pharma US, Inc. announced today the launch of the 'Keep on Dancing' Sweepstakes, sponsored by Myrbetriq® (mirabegron). Fans age 18 and older can enter for a chance to win a trip for two to Los Angeles to attend a fall 2018 taping of ABC's hit show "Dancing with the Stars" (DWTS).