Efficacy and Safety of MET097 in Adults with Overweight or Obesity: A Phase 3, Randomized, Placebo-Controlled Trial
- Trial ID
- 2025-523974-18-00
- Protocol
- MET097-25-301
- Sponsor
- Metsera Inc.
Trial statistics
Diseases & Conditions
Objectives
The primary objective of this study is to evaluate the efficacy of MET097, a GLP-1RA, in individuals with obesity by demonstrating superiority over placebo in the percent change from baseline body weight at Week 64. This assessment is clinically significant for determining the potential of a once-weekly subcutaneous injection to achieve sustained weight reduction. Secondary objectives include:
- Evaluation of total body weight reduction from baseline at Week 64 and Week 84.
- Assessment of changes in lipids and lipoproteins at Week 64.
- Measurement of changes in systolic blood pressure at Week 64.
- Evaluation of physical functioning via patient reported outcomes at Week 64.
Participants
The study population consists of 2606 adult participants, including both males and females, diagnosed with obesity. Eligible individuals are aged 18 years or older and must present with a body mass index (BMI) of $\ge$30 kg/m$^2$, or a BMI between 27.0 kg/m$^2$ and <30.0 kg/m$^2$ accompanied by at least one weight-related comorbidity. These comorbidities include hypertension, dyslipidemia, obstructive sleep apnea, or cardiovascular disease. Participants are required to adhere to specific lifestyle modifications, such as dietary restrictions and exercise plans, throughout the duration of the trial.
Plans and Procedures
This Phase 3, multi-center, randomized, controlled trial is designed to evaluate the efficacy and safety of MET097, a fully-biased ultra long-acting GLP-1RA, in adults with obesity or overweight. The study utilizes a subcutaneous injection of either the test product or a placebo once weekly. Participants will undergo a screening visit to assess eligibility based on body mass index (BMI) and weight-related co-morbidities, such as hypertension, dyslipidemia, obstructive sleep apnea, or cardiovascular disease. The primary objective is to demonstrate superiority in the percent change from baseline body weight at Week 64. Secondary endpoints include changes in body weight, fasting triglycerides, non-high-density lipoprotein-cholesterol, systolic blood pressure, and physical function scores. The study includes assessments at Week 84 to evaluate long-term outcomes. The total duration of participant involvement and study procedures is designed to monitor safety and efficacy through the final follow-up visits.
Treatment
The experimental treatment consists of MET097, a fully-biased ultra long-acting glucagon-like peptide-1 receptor agonist. The medication is administered as a solution for injection at a concentration of 5 mg/mL via subcutaneous injection on a once-weekly dosing schedule.
The comparator is a matching placebo used for comparison against the active test substance.
Efficacy
The efficacy of MET097 in patients with obesity will be evaluated through several parameters. The primary endpoint is the percent change from baseline in body weight at Week 64. Secondary endpoints include the absolute change in body weight in kilograms at Week 64 and Week 84. Additional secondary assessments at Week 64 consist of the occurrence of specific weight reduction percentages, changes in fasting triglycerides, and changes in non-high-density lipoprotein cholesterol.
Further efficacy assessments at Week 64 involve the measurement of systolic blood pressure and the evaluation of the physical function domain score using the Short Form 36 health survey. The study also evaluates the percent change from baseline in body weight at Week 84.
Inclusion and Exclusion Criteria
Inclusion Criteria
- Provision of signed and dated informed consent form (ICF)
- Male or female adults, aged ≥18 years
- Have a BMI at Screening of a. BMI ≥30 kg/m2 (may or may not have the weight-related co-morbidities listed below) OR b. BMI ≥27.0 kg/m2 to <30.0 kg/m2 must have at least one of the following weight-related co-morbidities either previously diagnosed or diagnosed at Screening: • Hypertension: on stable blood pressure (BP)-lowering medication to treat BP or having systolic BP (SBP) ≥130 mmHg or diastolic BP ≥80 mmHg at Screening • Dyslipidemia: on lipid-lowering medication or having LDL-C ≥160 mg/dL (4.1 mmol/L) or triglycerides ≥150 mg/dL (1.7 mmol/L), or HDL-C <40 mg/dL (1.0 mmol/L) for men or HDL-C <50 mg/dL (1.3 mmol/L) for women • Clinical diagnosis of obstructive sleep apnea • Cardiovascular disease (eg, heart failure with New York Heart Association (NYHA) Functional Class I-III, history of ischemic or hemorrhagic stroke or cerebrovascular revascularization procedure [eg, carotid endarterectomy and/or stent], myocardial infarction, coronary artery disease, or peripheral vascular disease)
- In the investigator’s opinion, are well-motivated, capable, and willing to a. CCI b. Self-inject study drug (or receive an injection from a trained family member or caregiver if visually impaired or with physical limitations) c. d. Follow trial procedures for the duration of the trial, including, but not limited to: follow lifestyle advice (for example, dietary restrictions and exercise plan) and complete required documentation and questionnaires
Exclusion Criteria
- Female who is breastfeeding, or who is pregnant at Screening, or prior to randomization on Day 1
- Unwilling or unable to follow contraceptive requirements
- Estimated glomerular filtration rate (eGFR) <30 mL/min/1.73 m2, as determined by the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI Screat-Scys Combined) (using serum creatinine and serum cystatin-c combined)) at Screening
- Thyroid-stimulating hormone (TSH) level lower than 0.4 mIU/L or higher than 6.0 mIU/L at Screening. Note: participants receiving treatment for hypothyroidism may be included, provided their thyroid hormone replacement dose has been stable for at least 3 months prior to Screening
- Poorly controlled hypertension, defined as the following: a. Mean seated systolic BP ≥180 mm Hg or mean seated diastolic BP ≥120 mm Hg at Screening
- Diagnosis of any form of diabetes (resolved gestational diabetes is permitted) or HbA1c ≥ 6.5% or fasting glucose >125 mg/dL (≥48 mmol/mol), random glucose ≥200 mg/dL (≥11.1 mmol/L) with classic symptoms of hyperglycemia or history of taking any medications to lower glucose within 90 days before Screening.
Trial Status by Country
| Country | Status | Start of Recruitment | Planned Patients |
|---|---|---|---|
Bulgaria | Not Recruiting | 30 Apr 2026 | 63 |
Czechia | Not Recruiting | 30 Apr 2026 | 135 |
Germany | Not Recruiting | 30 Apr 2026 | 120 |
Hungary | Not Recruiting | 30 Apr 2026 | 105 |
Poland | Not Recruiting | 30 Apr 2026 | 216 |
Romania | Not Recruiting | 30 Apr 2026 | 90 |
Slovakia | Not Recruiting | 30 Apr 2026 | 80 |
Spain | Not Recruiting | 30 Apr 2026 | 85 |
Sites & Investigators
Investigational Products
Details about the medicinal products being studied in this clinical trial.
| Product Name | Role in Trial | Formulation | Administration | Max Daily Dose | Treatment Duration | EU MP Number |
|---|---|---|---|---|---|---|
MET097 Injection, 5mg/mL | Test | SOLUTION FOR INJECTION | SUBCUTANEOUS INJECTION | 0 | 84 | PRD13116865 |
MET097 matching placebo | Placebo | N/A | — | — | — | N/A |








