Inclusion Criteria:  19~55 years old, Atopic Healthy Subjects or Subjects With Mild Allergic Diseases Serum total IgE level of 30 to 700 IU/mL or > 700 IU/mL Signed the informed consent form  Exclusion Criteria:  Hyperimmunoglobulin E syndrome or malignancy Positive drug screen result AST or ALT > 1.5 * Upper normal range eGFR < 60mL/min/1.73m2 Allergy immunotherapy initiated or Administration of a live vaccine within 3 months prior to randomization History of participation in another clinical trial within 6 months prior to randomization