A Single-Center, Open-Label, Single Ascending Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of Exenatide Circular RNA-Lipid Nanoparticle Injection (CR059) in Chinese Subjects With Type 2 Diabetes Mellitus
Objectives: •To evaluate the safety and tolerability of a single dose of Exenatide Circular RNA-Lipid Nanoparticle Injection（CR059）in Chinese subjects with T2DM. Secondary Objectives: * To characterize the pharmacokinetic (PK) profile of a single dose of Exenatide Circular RNA-Lipid Nanoparticle Injection（CR059） in Chinese subjects with T2DM; * To characterize the pharmacodynamic (PD) profile of a single dose of Exenatide Circular RNA-Lipid Nanoparticle Injection（ CR059） in Chinese subjects with T2DM; * To evaluate the immunogenicity of a single dose of Exenatide Circular RNA-Lipid Nanoparticle Injection（ CR059） in Chinese subjects with T2DM; Participants : Diagnosed with T2DM for at least 3 months but less than 5 years, according to the Chinese Diabetes Society's diagnostic criteria
• Chinese male or female， 18≤age≤-65 years .
• Diagnosed with T2DM for at least 3 months but less than 5 years, according to the Chinese Diabetes Society's Chinese Guidelines for the Prevention and Treatment of Type 2 Diabetes (2024 Edition) diagnostic criteria.
• Patients who have failed treatment with diet and exercise alone, or metformin monotherapy, or a stable regimen for 12 weeks of metformin (dose ≥1500 mg/day or maximum tolerated dose ≥1000 mg/day) combined with one of the following oral antidiabetic drugs (or their fixed-dose combinations): sulfonylureas, glinides, alpha-glucosidase inhibitors, SGLT2 inhibitors, or thiazolidinediones (at ≥1/2 the maximum approved dose, or the recommended minimum maintenance dose for SGLT2 inhibitors e.g., empagliflozin 10mg, canagliflozin 100mg). Fasting Plasma Glucose (FPG) must be \<13.0 mmol/L, and 7.5%≤HbA1c ≤ 10.0%.
• 18.5 kg/m²≤Body Mass Index (BMI) ≤40.0 kg/m² at screening and enrollment
• Subjects have no pregnancy plan from screening until 3 months after the last dose and are willing to use at least one effective method of contraception during the entire trial period until 3 months after the last dose.
• Able to understand and willing to sign the informed consent form, and fully understand the trial content, procedures, and potential adverse reactions.
• Able to complete the trial according to the protocol requirements.