Vertex Expanded Use for Cystic Fibrosis Drug
FDA has approved an expanded use for Vertex Pharmaceuticals’ Orkambi (lumacaftor/ivacaftor) to include use in children ages two through five years with cystic fibrosis (CF) who have two copies of the F508del-CFTR mutation, making it the first therapy approved to treat the underlying cause of CF in this population. Approval is based on data from a Phase 3 open-label safety study in 60 patients that showed treatment with Orkambi was generally safe and well tolerated for 24 weeks, with a safety profile similar to that in patients ages six years and older, according to the company. Improvements in sweat chloride, a secondary endpoint, were observed at week 24, it says.
Orkambi was originally approved in 2015 to treat cystic fibrosis patients age 12 and older who have the F508del mutation that causes the production of an abnormal protein that disrupts how water and chloride are transported in the body. An FDA statement at the time said that having two copies of this mutation—one inherited from each patient—is the leading cause of cystic fibrosis.