This is a Phase 1, conventional, double-blind, placebo-controlled, single-center clinical study comprised of 2 segments (Segment 1 and Segment 2) in which single and multiple doses of SUVN-911 or placebo will be orally administered to healthy male subjects to evaluate the safety, tolerability, and pharmacokinetic profile.

This is a single and multiple ascending dose study to assess the safety, tolerability and pharmacokinetics of SUVN-911 administered orally once a day to healthy male subjects. The study will be conducted under double-blind conditions.

The primary objectives are to evaluate the safety and tolerability of SUVN-911 following oral administration of single or multiple ascending doses and estimate the maximum tolerated dose of SUVN-911, if possible.

The secondary objectives are to evaluate the single and repeat dose plasma and urine pharmacokinetics of SUVN-911 following oral administration of single and multiple ascending doses in healthy male subjects.

Inclusion Criteria:

• Healthy male aged 18 to 45 years with a body mass index (BMI) between 18 and 30 kg/m2, (inclusive).

Exclusion Criteria:

• Standard exclusion criterion for Phase 1 clinical trial in healthy subjects:

  • History of any clinically significant disease or disorder which, in the opinion of the Investigator, may either put the volunteer at risk because of participation in the study, or influence the results or the volunteer's ability to participate.
  • History or presence of gastro intestinal (GI), hepatic, or renal disease or any other condition known to interfere with absorption, distribution, metabolism, or excretion of drugs as judged by Investigator.

Double blind