Bioavailability of KBP-5074 Tablet vs Capsule Formulations

Twenty healthy subjects will be allocated 4:1 to either the crossover study groups (16 subjects) or to the 0.25 mg tablet single dose treatment (4 subjects). Subjects allocated to the crossover study groups will be randomized 1:1 to 0.5 mg tablet/capsule (8 subjects) or 1.0 mg tablet/capsule (8 subjects). Within the crossover study groups, subjects will be further randomized to receive a single dose of KBP-5074 (0.5 mg or 1.0 mg) in either capsule or tablet formulation in a 2-period crossover design with a 2-week washout period. The study duration for subjects in the crossover study groups will be approximately 7 weeks, which includes a 3-week screening period, and the 2 crossover single dose periods, which will be followed by a 2-week washout/follow-up period, respectively. Subjects allocated to the 0.25 mg dose cohort (n=4) will receive a single dose of 0.25 mg in tablet formulation only. The 0.25 mg tablet cohort will provide additional data for the evaluation of dose exposure for the tablet formulation. The study duration for the single dose arm will be 5 weeks, which includes a 3-week screening period, and the single dose which will be followed by a 2 week washout period.