Single and Multiple Doses of HA115 and Food Effect in Healthy Adult Volunteers

The study consists of 2 parts, Part A (SAD, including fed/fasted comparison) and Part B (MAD). Part A will be a randomized, double blind, placebo controlled, dose-escalating titration of up to 8 single dose levels of HA115. In each cohort, 8 participants will receive active compound and 2 will receive placebo in a randomized manner. Part A will include an assessment of the effect of a high-fat breakfast on the absorption and PK profile of HA115, performed in 10 participants at a single dose to be selected based on SAD results and predicted to be associated with therapeutic plasma concentrations. Part B will be a randomized, double-blind, placebo controlled parallel group study of up to 3 dose levels of HA115 given once daily. The number of days of dosing will be based on the results of the PK analysis from Part A. In each cohort, 8 participants will receive active compound fasted and 2 will receive placebo in a randomized, double blind fashion. Safety observations and PK evaluations will be made. Safety data will be reviewed with the SRC prior to each dose escalation.