A Phase 2b Study to Evaluate the Efficacy and Safety of Once-Monthly MET097 in Adults With Obesity or Overweight

Inclusion Criteria: * Body mass index (BMI) at Screening of: * BMI ≥30 kg/m2 and ≤50.0 kg/m2 (can have the weight-related co-morbidities listed below) * BMI ≥27.0 kg/m2 to \<30.0 kg/m2 with at least one of the following weight-related co-morbidities: 1. Hypertension: on blood pressure (BP)-lowering medication or having systolic BP ≥130 mmHg or diastolic BP ≥80 mmHg at Screening 2. Dyslipidemia: on lipid-lowering medication or having low-density lipoprotein cholesterol (LDL-C) ≥160 mg/dL (4.1 mmol/L) or triglycerides ≥150 mg/dL (1.7 mmol/L), or high-density lipoprotein-cholesterol (HDL-C) \<40 mg/dL (1.0 mmol/L) for men or HDL-C \<50 mg/dL (1.3 mmol/L) for women at Screening 3. Stable body weight (increase or decrease ≤5 kg) within 3 months prior to Screening Exclusion Criteria: * Diagnosis of diabetes (T1DM or T2DM) or glycated hemoglobin A1c (HbA1c) ≥ 6.5% or fasting plasma glucose \>125 mg/dL. * Estimated glomerular filtration rate (eGFR) \<75 mL/min/1.73 m2 * History of pancreatitis * Family or personal history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia syndrome type 2 (MEN-2) * History of significant active or unstable major depressive disorder (MDD) or other severe psychiatric disorder within the last 2 years * Poorly controlled hypertension at, defined as any of the following: * Mean seated systolic BP ≥160 mm Hg or mean seated diastolic BP ≥95 mm Hg at Screening visit * A change in antihypertensive medications within 30 days of Screening visit * Renal artery stenosis, or evidence of labile blood pressure including symptomatic postural hypotension at Screening; postural hypotension is defined as a sustained reduction of systolic blood pressure of at least 20 mmHg or diastolic blood pressure of 10 mmHg, with or without symptoms during the assessment, within three minutes of standing * Thyroid-stimulating hormone (TSH) level lower than 0.4 mIU/L or higher than 6.0 mIU/L at the Screening visit. Note: participants receiving treatment for hypothyroidism may be included, provided their thyroid hormone replacement dose has been stable for at least 6 months