NCT07919678RecruitingPhase 3
A Study to Learn About Study Medicine Called Berobenatide in Adults With Knee Pain and Overweight or Obesity (VESPER-OA 1)
A PHASE 3, RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED STUDY TO ASSESS THE EFFICACY AND SAFETY OF ONCE-MONTHLY BEROBENATIDE IN ADULTS WITH KNEE OSTEOARTHRITIS AND OVERWEIGHT OR OBESITY (VESPER-OA 1)
Source: ClinicalTrials.gov · Last updated 5 Nov 2026
Brief summary (registry, in English)
The purpose of this clinical study is to learn about the safety and effects of berobenatide (PF-08653944) for the treatment of knee osteoarthritis in adults with overweight or obesity. The study will last 52 weeks and compare the effects of berobenatide compared to placebo on knee pain, physical function, and body weight. Study activities will include blood tests, knee pain assessment, physical function questionnaires and body measurements.
- Status (registry)
- Recruiting
- Phase (registry)
- Phase 3
- Study type
- Interventional
- Enrollment
- 656 (estimated)
- First submitted
- 20 Oct 2026
- Start date
- 26 Oct 2026
- Primary completion date
- 22 Aug 2028
- Lead sponsor
- Pfizer
- Diseases
- Obesity
- NCT number
- NCT07919678
- EU CT number
- 2026-526328-34-00
What you commit to
- Study type: Interventional · Phase 3
- Planned participants: 656
- From 26 Oct 2026 to the primary completion date, 22 Aug 2028
- 40 sites in 2 countries
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study design.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Self-reported body weight increase or decrease greater than 5% within 90 days before Screening.
- Prior target-knee replacement, planned target-knee replacement, or planned elective knee surgery during the study.
- Prior participation in a berobenatide clinical trial with receipt of active treatment or placebo.
Other illness
- Known clinically significant gastric-emptying abnormality, history of acute or chronic pancreatitis, or active symptomatic gallbladder disease.
- Personal history or first-degree family history of medullary thyroid carcinoma or multiple endocrine neoplasia type 2.
- Significant active or unstable psychiatric disorder.
- Condition or knee disorder that could confound assessment of target-knee pain.
- Hypersensitivity to a drug with glucagon-like peptide-1 receptor activity, including berobenatide, or any excipient.
Lab values
- History of diabetes or Screening laboratory findings indicative of diabetes.
- Recent use of weight-loss medication, any glucose-lowering therapy, or other protocol-prohibited treatment.
Who the study is looking for
- Adults 18 years of age or older, or the minimum age of consent according to local regulations.
- Body mass index of at least 27 kg/m² at Screening.
- Currently meets American College of Rheumatology (ACR) Criteria for knee OA.
- Pain due to knee OA.
- Knee radiograph consistent with knee osteoarthritis and Kellgren-Lawrence Grade 2 or 3.
- Willingness to complete the required analgesic washout.
- History of at least 1 self-reported unsuccessful dietary effort to lose body weight.
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (40)
Sites in registry order. Save your city in your profile to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Bluewater Clinical Research Group Inc. Coordinator of this site? Confirm its status | Sarnia | Canada | Not yet recruiting |
| Albuquerque Clinical Trials, Inc. Coordinator of this site? Confirm its status | Albuquerque | United States | Not yet recruiting |
| Charlottesville Medical Research Center, LLC Coordinator of this site? Confirm its status | Charlottesville | United States | Not yet recruiting |
| Northwestern Memorial Hospital, Diagnostic Testing Center (Phlebotomy/EKG) Coordinator of this site? Confirm its status | Chicago | United States | Not yet recruiting |
| Great Lakes Clinical Trials LLC dba Flourish Research Coordinator of this site? Confirm its status | Chicago | United States | Not yet recruiting |
| Northwestern Medicine Coordinator of this site? Confirm its status | Chicago | United States | Not yet recruiting |
| Northwestern University Feinberg School of Medicine Coordinator of this site? Confirm its status | Chicago | United States | Not yet recruiting |
| Northwestern Memorial Hospital, Investigational Drug Service Coordinator of this site? Confirm its status | Chicago | United States | Not yet recruiting |
| Clinical Research of West Florida, Inc. Coordinator of this site? Confirm its status | Clearwater | United States | Not yet recruiting |
| Skylight Health Research Coordinator of this site? Confirm its status | Colorado Springs | United States | Not yet recruiting |
| Mercy Family Clinic Coordinator of this site? Confirm its status | Dallas | United States | Not yet recruiting |
| Universal Axon Clinical Research LLC Coordinator of this site? Confirm its status | Doral | United States | Recruiting |
| Altoona Center For Clinical Research Coordinator of this site? Confirm its status | Duncansville | United States | Recruiting |
| Headlands Research California, LLC Coordinator of this site? Confirm its status | Escondido | United States | Not yet recruiting |
| Profound Research, LLC Coordinator of this site? Confirm its status | Farmington Hills | United States | Recruiting |
| Cedar Health Research Coordinator of this site? Confirm its status | Fort Worth | United States | Not yet recruiting |
| Novant Health Granite Quarry Internal Medicine (knee x-ray) Coordinator of this site? Confirm its status | Granite Quarry | United States | Not yet recruiting |
| BRCR Global Louisiana Coordinator of this site? Confirm its status | Gretna | United States | Not yet recruiting |
| JCCT- Juno NW Houston Coordinator of this site? Confirm its status | Houston | United States | Not yet recruiting |
| Westside Center for Clinical Research Coordinator of this site? Confirm its status | Jacksonville | United States | Not yet recruiting |
| Activian Clinical Research Coordinator of this site? Confirm its status | Kingwood | United States | Not yet recruiting |
| Renstar Medical Research Coordinator of this site? Confirm its status | Lady Lake | United States | Not yet recruiting |
| Monroe Biomedical Research Coordinator of this site? Confirm its status | Monroe | United States | Recruiting |
| AMR Clinical Coordinator of this site? Confirm its status | Norman | United States | Not yet recruiting |
| Renstar Medical Research Coordinator of this site? Confirm its status | Ocala | United States | Not yet recruiting |
| Prospective Research Innovations Inc Coordinator of this site? Confirm its status | Rancho Cucamonga | United States | Not yet recruiting |
| Accellacare - Salisbury Coordinator of this site? Confirm its status | Salisbury | United States | Not yet recruiting |
| Consano Clinical Research, LLC Coordinator of this site? Confirm its status | Shavano Park | United States | Not yet recruiting |
| Revive Research Institute, Inc. Coordinator of this site? Confirm its status | Sterling Heights | United States | Recruiting |
| Clinical Research Atlanta Coordinator of this site? Confirm its status | Stockbridge | United States | Not yet recruiting |
| Clinical Research of West Florida Inc Coordinator of this site? Confirm its status | Tampa | United States | Not yet recruiting |
| AMR Clinical Coordinator of this site? Confirm its status | Tempe | United States | Not yet recruiting |
| DM Clinical Research Coordinator of this site? Confirm its status | Tomball | United States | Not yet recruiting |
| Solace Clinical Research Coordinator of this site? Confirm its status | Tustin | United States | Not yet recruiting |
| Velocity Clinical Research, Waco Coordinator of this site? Confirm its status | Waco | United States | Not yet recruiting |
| Elevate Clinical Research Coordinator of this site? Confirm its status | Wichita | United States | Not yet recruiting |
| Accellacare Coordinator of this site? Confirm its status | Wilmington | United States | Recruiting |
| Delaney Radiologist Coordinator of this site? Confirm its status | Wilmington | United States | Recruiting |
| North Georgia Internal Medicine Coordinator of this site? Confirm its status | Woodstock | United States | Not yet recruiting |
| North Georgia Clinical Research, LLC Coordinator of this site? Confirm its status | Woodstock | United States | Not yet recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.