Kalydeco Fails to Gain FDA Approval as CF Treatment for Specific Residual Mutations
Vertex Pharmaceuticals Incorporated recently announced that it has received a Complete Response Letter from the U.S. Food and Drug Administration (FDA) to its supplemental New Drug Application (sNDA) for Kalydeco (ivacaftor) as a treatment for cystic fibrosis patients ages 2 and older with one of 23 residual function mutations in the cystic fibrosis transmembrane conductance…