'Correct' CF Phase II Answer: Vertex Steps to Head of Class?
Vertex Pharmaceuticals Inc.'s approach to cystic fibrosis (CF) pairing the approved therapy Kalydeco (ivacaftor) as a "potentiator" with another compound, VX-661, as a "corrector" gained market-pleasing, top-line, Phase II proof that sent the stock on a skyward ride.
Shares of Cambridge, Mass.-based Vertex (NASDAQ:VRTX) closed Friday at $85.60, up $32.73, or 61.9 percent, after trading as high as $85.90.
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