The purpose of this phase1 study is to investigate the pharmacokinetics, safety and tolerability of a single oral dose of SA001 and its active metabolite in healthy male volunteers.

This study consists of Part 1 followed Part 2.

Part 1 (Dose escalation study, SA001 60mg~300mg dose group) The part 1 is a dose escalation study. The starting dose is SA001 60mg, and the maximum dose is 300mg. Each dose group is assigned to SA001 or Placebo in a ratio of 3:1. The pharmacokinetics, safety and tolerability of SA001 and its metabolite are investigated after a single oral administration on the fasting state.

Part 2 (Single dose and food effect study, SA001 120mg and 300mg dose group) The purpose of this part 2 is to evaluate the food effect of a high-fat diets(HFDs) on the single oral dose pharmacokinetics of SA001 and its metabolite.

Inclusion Criteria:

1. 19 years to 45 years (Healthy male Korean)
2. Body weight of 55 to 90kg; and BMI of 18.0 to 27.0 kg/m^2
3. Subject who voluntarily agrees to participate in this study and has given a written informed consent, after fully understanding the detailed explanation of this study

Exclusion Criteria:

1. Subject with a disease history of any clinically significant condition as below.

   - Liver, Kidney, nervous system, immune system, respiratory system, endocrine system, tumor, cardiovascular disease or mental illness (mood disorder or obsessive-compulsive disorder etc.) etc.

2. Subject with a history of gastrointestinal disease (Crohn's disease, ulcer, acute or chronic pancreatitis, etc.) or gastrointestinal surgery (except simple appendicectomy or hernia surgery) that may affect the absorption of the study drug

3. Subject with a history of clinically significant hypersensitivity or hypersensitivity reactions to drugs (aspirin, antibiotics, etc.)

4. Serum ALT(SGPT)/AST(SGOT) >1.5×institutional upper limit normal (ULN)

5. eGFR< 90mL/min/1.73m^2

6. Systolic blood pressure <100 mmHg or >160 mmHg

7. Diastolic blood pressure <60 mmHg or >100 mmHg

8. Inadequate cardiac function confirmed by 12-lead ECG findings at screening as followings:

   • QTcF > 430msec (males)
   • PR interval > 200msec or < 110msec
   • QRS complex > 120msec
   • Evidence of 2nd- or 3rd-degree atrioventricular (AV) block
   • Pathologic Q waves (defined as Q-wave > 40msec or depth > 0.5mV)
   • Evidence of ventricular preexicitation, left bundle branch block (LBBB), right bundle branch block (RBBB, Incomplete RBBB)

9. Subject with risk factors for Torsade de pointes such as long QT syndrome, family history of sudden death, heart failure, hypokalemia, and arrhythmias

10. Subject with a history of drug abuse within 60 days prior to screening or who is positive for drugs of abuse in urine tests at screening

11. Subject who received any prescription drug or herbal medicine within 14 days prior to the first administration of the Investigational product

12. Subject who received any drugs such as

    • Prescription drug or herbal medicine within 14 days prior to the first administration of the investigational products
    • Over the counter (OTC) or vitamin within 7 days prior to the first administration of the investigational products

13. Subject who received other investigational products within 90 days prior to the first administration of the investigational products

14. Subject who continuously drink alcohol (more than 21 units/week, 1 unit = 10 g of pure alcohol) or cannot abstain from alcohol during the study period

15. Subject with history of smoking within 90 days prior to the first administration of the investigational products

16. Subject who cannot prohibit grapefruit/ caffeine-containing foods during the study period from 3 days before the first administration of the investigational products

17. Man of reproductive potential not willing to use contraceptive measures during the study period

18. Subject not eligible for study participation in the opinion of the investigator