This is a Phase 2, open-label, multi-center, 2x2 crossover study assessing the safety and efficacy of MS1819-SD (spray dried) vs porcine PERT given at the same dose that was being administered during the pre-study period.~MS1819-SD will be assessed in a 2x2 crossover including at least 30 patients completing both periods.
The primary objectives of this study are to assess the safety and efficacy of MS1819-SD vs porcine pancreatic enzyme replacement therapy (PERT) in patients with exocrine pancreatic insufficiency (EPI) due to cystic fibrosis (CF).