The purpose of this study is to evaluate the safety, tolerability and pharmacokinetics of single oral doses of ID110521156 in healthy adult subjects. This is the first clinical study of ID110521156.

Inclusion Criteria:

• Healthy subjects aged 19 to 50 years at the time of Screening.
• Body mass index (BMI) within 18.5 to 29.9 kg/m2; and a total body weight ≥ 40 kg, ≤ 90 kg
• Evidence of a personally signed and dated informed consent document indicating that the subject has been informed of all pertinent aspects of the study
• For female subjects, not pregnant or lactation women, or naturally menopausal (spontaneous amenorrhea for at least 12 months) or surgically infertility (bilateral tubal occlusion, hysterectomy, bilateral salpingectomy, bilateral oophorectomy etc).

Exclusion Criteria:

• Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal(including pancreatitis), cardiovascular, hepatic, psychiatric, neurological, or allergic disease (including drug allergies, but excluding untreated, asymptomatic, seasonal allergies at the time of dosing.
• Treatment with an investigational drug (including a bioequivalence study) within 6 months prior to the scheduled date of administration of the investigational product.
• Fertile male subjects who are unwilling or unable to use a highly effective method of contraception for the duration of the study and for at least 3 months after the last dose.