A Study to Evaluate the Safety, Tolerability and Pharmacokinetics of AK0406 Injection in Healthy Adult Participants

Inclusion Criteria: * Male or female participants aged 18 to 65 years (inclusive) at the time of formed consent. * At screening, male participants must weigh ≥50 kilogram (kg), and female participants must weigh ≥45 kg, with a body mass index between 18.0 and 32.0 kilograms per square meter (kg/m²) (inclusive). * Participants must be in good general health as determined by the investigator, with no clinically significant abnormalities in vital signs, 12-lead electrocardiogram (ECG), or laboratory tests. * Woman of childbearing potential (WOCBP) and male participants whose female sexual partner is WOCBP must agree to use highly effective contraception from the day of study drug administration until 6 months after dosing and must agree to avoid sperm or oocyte donation and not plan to conceive during this period. * Participants must voluntarily agree to participate, be able to communicate effectively with the investigator, understand and comply with study requirements, and provide written informed consent. Exclusion Criteria: * Presence of clinically significant cardiovascular, respiratory, hepatic, renal, hematologic (e.g., bleeding disorders), gastrointestinal, endocrine, immune, dermatologic, neurologic, or psychiatric disease, or any other condition that, in the opinion of the investigator, may compromise participant safety, interfere with study results, or prevent completion of the study. * Active malignancy or history of malignancy (except adequately treated basal cell…