This is a Phase 1, randomized, double-blind, placebo-controlled, single- and multiple-ascending oral dose study conducted in three parts.

Key Inclusion Criteria:

• Body mass index 18.5 to 35.0 kg/m², inclusive, and body weight of at least 50.0 kg at screening
• In good health, determined by no clinically significant findings from medical history, physical examination, and vital sign measurements
• Women of non-childbearing potential and men using contraceptive measures

Key Exclusion Criteria:

• History of clinically significant hematological, renal, pancreatic, gastrointestinal, hepatic, cardiovascular, metabolic, endocrine, immunological, allergic disease, or other major disorders
• History of asthma, chronic obstructive pulmonary disease, or emphysema
• Clinically significant neurologic disorder
• History of stomach or intestinal surgery or resection
• History of malignancy