Real-life initiation of lumacaftor/ivacaftor combination in adults with cystic fibrosis homozygous for the Phe508del CFTR mutation and severe lung disease

2017 
Abstract Objective To investigate the short-term adverse events and effectiveness of lumacaftor/ivacaftor combination treatment in adults with cystic fibrosis (CF) and severe lung disease in a real life setting. Methods A multicentre observational study investigated adverse events, treatment discontinuation, FEV 1 and body mass index (BMI) one month and three months after lumacaftor/ivacaftor initiation in adults with CF and FEV 1 below 40% predicted. Results Respiratory adverse events (AEs) were reported by 27 of 53 subjects (51%) and 16 (30%) discontinued treatment. The mean absolute change in FEV 1 was +2.06% after one month of treatment ( P =0.086) and +3.19% after 3 months ( P =0.009). BMI was unchanged. Conclusions Treatment with lumacaftor/ivacaftor in patients with CF and severe lung disease was discontinued more frequently than reported in clinical trials, due to respiratory AEs. Nevertheless, the patients who continued treatment had an increase in lung function comparable to what was observed in pivotal trials.
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