FDA Approves Merck s WINREVAIRtm (sotatercept-csrk), a First-in-Class Treatment for Adults with Pulmonary Arterial Hypertension (PAH, WHO* Group 1) lelezard.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from lelezard.com Daily Mail and Mail on Sunday newspapers.