VRTX already has two products on the market besides now being major cystic fibrosis player. read
The company already has two products on the market, hepatitis C drug Incivek and Kalydeco. It also has another experimental cystic fibrosis drug, VX-809, in a late-stage study. More success for VX-661 and VX-809 would position Vertex as something of a juggernaut in the cystic fibrosis market.