This study is for people 18 years or older who have two copies of the F508del CFTR mutation and have been taking lumacaftor/ivacaftor for at least three months.
https://clinicaltrials.gov/ct2/show/NCT03140527?term=Proteostasis&cond=Cystic+Fibrosis&rank=2
https://clinicaltrials.gov/ct2/show/NCT03140527?term=Proteostasis&cond=Cystic+Fibrosis&rank=2