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Completed

NCT Number: NCT06712836

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

This study is designed to test how well MET097, an active drug, works to treat individuals with obesity or overweight when compared to placebo. MET097 or placebo will be given to individuals weekly for 28 weeks. If an individual is assigned to MET097 they will receive one of four different dose levels. Participants who have completed the first 28 weeks may participate in an exploratory extension study.

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Key information

Age range

18 year–70 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

Anaheim Clinical Trials, LLC, Anaheim, California, United States

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About this study

This is a multi-center, randomized, double-blind, placebo-controlled study to investigate the efficacy and safety of four different dose levels of MET097 vs. placebo for body weight loss in adult participants with obesity or overweight (body mass index [BMI] 27 to 50 kg/m2, aged 18 to 70), after 28 weeks with once weekly dosing. Participants who have completed the first 28 weeks may participate in an exploratory extension study that includes less frequent dosing regimens. After the dosing period, there is an additional post-treatment follow-up period.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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:
  • Hypertension: on blood pressure (BP)-lowering medication or having systolic BP ≥130 mmHg or diastolic BP ≥80 mmHg at Screening
  • 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

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
  • Any lifetime history of a suicide attempt.

Treatment and study plan

MET097

Drug

MET097 is an ultra-long-acting, fully-biased analog of human GLP-1.

Placebo

Drug

Sterile 0.9% (w/v) saline will be used as placebo treatment during the study.

Primary outcomes

  1. Percent change from baseline in body weight at Week 28

    Time frame: Baseline (Week 0) through Week 28 (Day 197)

    Evaluate the efficacy of once-weekly MET097 on body weight after 28 once-weekly doses compared to placebo.

Secondary outcomes

  1. Weight reduction (weight loss) from baseline that is ≥ 5%

    Time frame: Baseline (Week 0) through Week 28 (Day 197)

  2. Weight reduction (weight loss) from baseline that is ≥ 10%

    Time frame: Baseline (Week 0) through Week 28 (Day 197)

  3. Weight reduction (weight loss) from baseline that is ≥ 15%

    Time frame: Baseline (Week 0) through Week 28 (Day 197)

  4. Change from baseline in body weight (kg)

    Time frame: Baseline (Week 0) through Week 28 (Day 197)

  5. Change from baseline in body mass index (BMI)

    Time frame: Baseline (Week 0) through Week 28 (Day 197)

  6. Change from baseline in waist circumference

    Time frame: Baseline (Week 0) through Week 28 (Day 197)

  7. Occurrence of treatment emergent adverse events (TEAEs)

    Time frame: Baseline (Week 0) through Week 37 (Day 265)

    Treatment emergent adverse events include adverse events of clinical interest as well as abnormal clinical significant physical exams, laboratory findings, and 12-lead ECG measurements that meet the definition for an AE.

  8. Minimum observed concentration (Cmin)

    Time frame: Baseline (Week 0) through Week 28 (Day 197)

  9. Area under the concentration versus time curve during the dosing interval (AUC(0-τ))

    Time frame: Baseline (Week 0) through Week 31 (Day 220)

  10. Maximum observed concentration (Cmax)

    Time frame: Baseline (Week 0) through Week 31 (Day 220)

  11. Time to maximum concentration (Tmax)

    Time frame: Baseline (Week 0) through Week 31 (Day 220)

  12. Percent change from baseline in body weight at all protocol-specified post-baseline measurements during the exploratory extension study

    Time frame: Week 28 to Week 60

  13. Occurrence of treatment emergent adverse events (TEAEs) during the exploratory extension study

    Time frame: Week 28 to Week 60

    Week 28 to Week 60

Sponsors and collaborators

Lead sponsor

Pfizer

Industry

Registry information

Official study title

A Phase 2b, Multi-Center, Randomized, Double-Blind, Placebo-Controlled Study of 28 Weeks to Investigate the Safety and Efficacy of Once-Weekly MET097 in Adults With Obesity or Overweight Followed by a 32-Week Extension (VESPER-1)

Acronym: VESPER-1

Important dates

Study start
2024
Primary completion
2025
Study completion
2026
First posted
Dec 2, 2024
Registry last updated
May 29, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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