This was an integrated Phase 1, single centre, multi-part, open-label study in both healthy subjects (Part 1), subjects with mild stable asthma (Part 2) and subjects with mild to moderate stable asthma (Part 3). In all three parts of the study every effort was made to include as close as possible an equal balance between male and female subjects.~This study assessed safety, tolerability and PK of single and multiple ascending doses of ZP-059 capsules administered as dry powder for inhalation in Part 1 to healthy volunteers (single ascending dose; SAD) and in Part 2 to subjects with mild asthma (multiple ascending dose; MAD), respectively.~In Part 3, the bioavailability of ZP-059 in subjects with mild to moderate stable asthma were compared to that of oral voriconazole. Part 3 started only after review of safety data from cohorts 1 to 4 of Part 1 (SAD) have been completed. Parts 2 and 3 of the study also explored voriconazole concentrations in induced sputum samples in asthmatic subjects.~As part of the safety and tolerability assessment, this study investigated the effects of ZP-059 on airway function in both mild and mild to moderate stable asthma subjects.
The primary safety objectives were:~Part 1: To determine the safety and tolerability of single doses of ZP-059 in healthy subjects~Part 2: To determine the safety and tolerability of multiple doses of ZP-059 in subjects with mild stable asthma~Part 3: To determine the safety and tolerability of single doses of ZP-059 in subjects with mild to moderate stable asthma.~The primary PK objectives were:~Part 1: To characterize systemic PK of voriconazole and N-oxide voriconazole after single doses of ZP-059 in healthy subjects~Part 2: To characterize systemic PK of voriconazole and N-oxide voriconazole after multiple doses of ZP-059 in subjects with mild stable asthma~Part 3: To characterize systemic PK of voriconazole and N-oxide voriconazole after single doses of ZP-059 and single doses of oral voriconazole in subjects with mild to moderate stable asthma.