Kylo-12

Main study objectives: To evaluate the safety and tolerability of Kylo-12 in healthy Chinese adult subjects within 24 weeks after a single dose. Secondary study objectives: To evaluate the safety and tolerability of Kylo-12 in healthy Chinese adult subjects throughout the study period after a single dose. To evaluate the pharmacokinetic (PK) characteristics of Kylo-12 in healthy Chinese adult subjects after a single dose. To evaluate the pharmacodynamic (PD) characteristics of Kylo-12 in healthy Chinese adult subjects after a single dose. To evaluate the immunogenicity characteristics of Kylo-12 in healthy Chinese adult subjects after a single dose. Exploratory objectives: To preliminarily explore the effects of a single dose of Kylo-12 on other lipid indicators and other exploratory indicators except apolipoprotein C3 (ApoC3) and triglycerides (TG). To preliminarily identify the metabolites of Kylo-12 after a single dose.