Patients for Affordable Drugs, a non-profit group focused on lowering drug prices, has launched a campaign aimed at getting Vertex Pharmaceuticals to lower the prices of its cystic fibrosis drugs. The group launched the effort May 17, the same day Vertex executives attended an annual shareholder meeting at the company's Boston headquarters. The Institute For Clinical and Economic Review, a drug pricing watchdog, published an analysis May 3 alleging Vertex's cystic fibrosis drugs are overpriced by hundreds of thousands of...