This is a single ascending dose study of HSD-016 to provide the initial assessment of the safety, tolerability, how the drug is absorbed and eliminated, and it's effect on the body in Japanese male subjects.

Inclusion:

1. Men, aged 20 to 45 years inclusive at screening.
2. Body mass index (BMI) in the range of 17.6 to 26.4 kg/m2 and body weight ≥45 kg
3. Healthy as determined by the investigator on the basis of screening evaluations.
4. Nonsmoker or smoker of fewer than 10 cigarettes per day as determined by history.

Exclusion:

1. No presence or history of any disorder that may prevent the successful completion of the study.
2. No history of drug abuse within 1 year.