During the dose escalation phase, patients will be given AC01 orally twice daily for seven days. In the cohort expansion phase, patients will be given AC01 orally twice daily for 28 days at dose levels selected on the basis of results of the dose escalation phase.
This is a randomized, double-blind, placebo-controlled two-part study with a multiple escalating dose phase followed by a cohort expansion phase to assess safety, tolerability, pharmacokinetics and pharmacodynamics of AC01 in patients with heart failure with reduced ejection fraction (HFrEF).