Study to Evaluate the Effects of Single Ascending Oral Doses of ACD856 on Safety, Tolerability and Pharmacokinetics

Single oral doses of ACD856 administered in a fasted state in escalation schedule of dose 1, dose 2, dose 3, dose 4, dose 5, dose 6 and dose 7. The escalation schedule may be adapted based on evaluation by internal Safety Review Committee.

Placebo oral solution

Single oral dose of ACD856 in fed state of either dose 4 or dose 5.