In the following video, David Williamson highlights the game-changing trial results that sent shares of Vertex Pharmaceuticals soaring 55% in a single day. Known for its blockbuster hepatitis C franchise Incivek, Vertex may have another megahit on its hands as it expands the use of cystic fibrosis treatment Kalydeco. For a closer look at Vertex and what investors should make of the market's reaction, watch the video and Fool on.
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