SAD Study of CGB3002 in Healthy Participants

Inclusion Criteria: * Must have signed written informed consent before any study-related activities are carried out and must be able to understand the full nature and purpose of the trial, including possible risks and adverse effects. Be willing and able to comply with all study assessments and adhere to the protocol schedule and restrictions. * Age≥18 years and\<55 years at the time of consent, healthy participants, male or female. * A body mass index (BMI) of 18 to 32 kg/m2 (cutoff inclusive), with male participants weighing no less than 50 kg, female participants weighing no less than 40 kg. * Males and females of childbearing potential agree to have no plans for childbearing, use reliable contraceptive measures and not to donate sperm or ova from 30 days prior to dosing until 120 days after dosing. For females of childbearing potential, hormonal contraceptives should begin at least 1 month prior to screening to ensure contraceptive is in full effect. Exclusion Criteria: * A known history of clinically significant drug allergy or atopic allergic disease (asthma, urticaria, eczematous dermatitis) or a known history of allergy to biologics or any excipients in biologics, fully resolved childhood asthma can be enrolled. * Any disease that may affect the safety evaluation of the participants or the in vivo process of the investigational product, including the central nervous system, cardiovascular system, digestive system, respiratory system, urinary system, hematopoietic s…