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Efficacy and Safety of MET097 Once-Weekly in People With Overweight or Obesity

Evaluating The Efficacy and Safety of MET097, a Fully-Biased, Ultra Long-Acting GLP-1RA, In People With Overweight or Obesity: A Phase 3, Multi-Center Randomized, Controlled Trial (VESPER-4)

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07311850
Acronym
VESPER-4
Enrollment
3578
Registered
2025-12-31
Start date
2025-12-19
Completion date
2028-04-25
Last updated
2026-09-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Obesity and Overweight

Brief summary

This study investigates the efficacy and safety of once weekly injectable MET097 in adult participants with obesity or overweight with weight-related comorbidities excluding T2D. This trial will last for a duration of 84 weeks. The primary endpoint will be assessed after 64 weeks of treatment with the secondary at 84 weeks.

Interventions

DRUGMET097

Once-weekly MET097 administered via subcutaneous injection

DRUGPlacebo

Once-weekly placebo administered via subcutaneous injection

Sponsors

Pfizer
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* BMI ≥ 30 kg/m2 or BMI ≥ 27.0 kg/m2 to \<30.0 kg/m2 and presence of at least 1 of the following weight- related comorbidities: Hypertension, dyslipidemia, obstructive sleep apnea, or cardiovascular disease)

Exclusion criteria

* Have any form of diabetes * Have a self-reported body weight change \> 5 kg (11 pounds) within 3 months prior to Screening * Personal or family history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia syndrome type 2 (MEN-2) * History of chronic pancreatitis or presence of acute pancreatitis within the past 180 days prior to the Screening visit; or active/current, symptomatic gallbladder disease

Design outcomes

Primary

MeasureTime frame
Percent change from baseline in body weightBaseline (Day 0) to Week 64

Secondary

MeasureTime frame
Percentage of Participants who achieve ≥5% of reduction from baseline body weightBaseline (Day 0) to Week 64
Percentage of Participants who achieve ≥10% of reduction from baseline body weightBaseline (Day 0) to Week 64
Percentage of Participants who achieve ≥15% of reduction from baseline body weightBaseline (Day 0) to Week 64
Percentage of Participants who achieve ≥20% of reduction from baseline body weightBaseline (Day 0) to Week 64
Change from baseline in Fasting triglyceridesBaseline (Day 0) to Week 64
Change from baseline in non-high-density lipoprotein-cholesterol (non-HDL-C) (mg/dL)Baseline (Day 0) to Week 64
Change from baseline in systolic blood pressureBaseline (Day 0) to Week 64
Change from baseline in the Short Form 36 health survey (SF-36) physical function domain scoreBaseline (Day 0) to Week 64
Change from baseline in body weightBaseline (Day 0) to Week 84
Change from baseline in non-high-density lipoprotein-cholesterol (non-HDL-C)Baseline (Day 0) to Week 84
Change from baseline in systolic blood pressure (mmHg)Baseline (Day 0) to Week 84
Change from baseline in waist circumference (cm)Baseline (Day 0) to Week 64 and Week 84
Change from baseline in glycated hemoglobin (HbA1c)Baseline (Day 0) to Week 64 and Week 84
Change from baseline in fasting plasma glucose (FPG)Baseline (Day 0) to Week 64 and Week 84
Change from baseline in fasting insulinBaseline (Day 0) to Week 64 and Week 84
Change from baseline in total cholesterolBaseline (Day 0) to Week 64 and Week 84
Change from baseline in low-density lipoprotein-cholesterol (LDL-C)Baseline (Day 0) to Week 64 and Week 84
Change from baseline in very low-density lipoprotein-cholesterol (VLDL-C)Baseline (Day 0) to Week 64 and Week 84
Change from baseline in high-density lipoprotein-cholesterol (HDL-C)Baseline (Day 0) to Week 64 and Week 84
Change from baseline in DBPBaseline (Day 0) to Week 64 and Week 84
Percent change from baseline in high-sensitivity C-reactive protein (hs-CRP)Baseline (Day 0) to Week 64 and Week 84
Change from baseline in EuroQoL 5-Dimension 5-Level (EQ5D-5L)Baseline (Day 0) to Week 64 and Week 84
Change from baseline in Control of Eating Questionnaire (CoEQ)Baseline (Day 0) to Week 64 and Week 84
Change from baseline in Food Noise Questionnaire (FNQ)Baseline (Day 0) to Week 64 and Week 84
Number of Participants With Treatment Emergent Adverse Events (TEAEs)Week 84
Number of Participants with Serious adverse events (SAEs)Week 84
Number of Participants with Adverse Events of Clinical Interest (AECIsWeek 84
Number of Participants With Clinical Laboratory AbnormalitiesWeek 84
Number of participants with anti-drug antibodies (ADAs)Week 84
Pharmacokinetics (PK): Maximum Observed Plasma Concentration (Cmax) of PF-08653944Week 84
Percent change from baseline in body weightBaseline (Day 0) to Week 84

Countries

Bulgaria, Canada, Czechia, Germany, Poland, Romania, Slovakia, Spain, United Kingdom, United States

Contacts

STUDY_DIRECTORPfizer CT.gov Call Center

Pfizer

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 5, 2026