Study Assessing the Safety, Tolerability, Pharmacokinetics, Food Effect, and Drug-Drug Interactions of PTI-801 in Healthy Volunteers, and Safety, Tolerability, and Pharmacokinetics of PTI-801 in Subjects With Cystic Fibrosis

Study Assessing PTI-428 Safety, Tolerability, Pharmacokinetics and Effect in Subjects With Cystic Fibrosis

Study Designed to Assess the Safety, Tolerability and PK of PTI-808 in Healthy Volunteers and in Adults With Cystic Fibrosis