Phase II Study of THDBH120 Injection in Overweight or Obese Subjects

Inclusion Criteria: * Male or female patients 18 to 75 years of age, inclusive; * Have a BMI ≥ 28 kg/m² or 24 ≤BMI\< 28.0 kg/m² with at least 1 weight-related comorbidity at screening: prediabetes, hypertension, metabolic-associated fatty liver disease, dyslipidemia, weight-bearing joint pain, or obstructive sleep apnea syndrome; * Diet and exercise control for at least 3 months before screening visit, and less than 5% self-reported change within the last 3 months. Exclusion Criteria: * History of diabetes; * History of obesity attributable to endocrine diseases, monogenic mutations, or drug-induced causes, such as hypothalamic obesity, pituitary obesity, hypothyroid obesity, Cushing's syndrome, insulinoma, acromegaly, or hypogonadism; or weight gain resulting from increased non-fat mass (e.g., edema); * Presence of uncontrolled hypertension at screening: systolic blood pressure ≥160 mmHg and/or diastolic blood pressure ≥100 mmHg; * A 12-lead electrocardiogram (ECG) shows any of the following at screening: heart rate \<50 bpm or \>100 bpm; QTcF prolongation (QT interval corrected by Fridericia's formula: QTc = QT/RR\^0.33; \>450 ms for males, \>470 ms for females); PR interval \>200 ms; presence of long QT syndrome; second- or third-degree atrioventricular block; left bundle branch block; complete right bundle branch block; Wolff-Parkinson-White syndrome; or any other condition that, in the opinion of the investigator, makes the subject unsuitable for participation in the clinical trial.