NCT07595549RecruitingPhase 3
A Study to Learn About the Study Medicine Called Berobenatide (PF-08653944) in People With Overweight or Obesity
A PHASE 3, RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED STUDY TO ASSESS THE EFFICACY AND SAFETY OF ONCE-MONTHLY PF-08653944 IN ADULTS WITH OVERWEIGHT OR OBESITY (VESPER-6)
Source: ClinicalTrials.gov · Last updated 5 Nov 2026
Brief summary (registry, in English)
The purpose of this clinical study is to learn about the effects and safety of berobenatide (PF-08653944). This may help people with overweight or obesity lose weight. People in this study may also have type 2 diabetes. About 950 adults will be in this study. Berobenatide will be compared to a placebo. A placebo does not have any medicine in it but looks just like the medicine being studied. Berobenatide or placebo is given by a shot under the skin in the belly area. The objective of the study is to compare the experiences of people receiving berobenatide to those of the people who do not to assess if the study medicine is effective and safe. People will take part in this study for about 20 months. During this time, they will have about 15 study visits at the site. They will also have 2 study visits over the phone.
- Status (registry)
- Recruiting
- Phase (registry)
- Phase 3
- Study type
- Interventional
- Enrollment
- 954 (estimated)
- First submitted
- 12 May 2026
- Start date
- 10 Jun 2026
- Primary completion date
- 4 May 2028
- Lead sponsor
- Pfizer
- Diseases
- Obesity, Type 2 diabetes
- NCT number
- NCT07595549
- EU CT number
- 2026-525318-75-00
What you commit to
- Study type: Interventional · Phase 3
- Planned participants: 954
- From 10 Jun 2026 to the primary completion date, 4 May 2028
- 81 sites in 11 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
- Have a self-reported body weight change greater than 5% within 90 days prior to Screening.
Other illness
- Diagnosis of type 1 diabetes or any other form of diabetes other than T2D.
- History of acute or chronic pancreatitis.
- Personal or family history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia type 2 (MEN-2).
Who the study is looking for
- Aged ≥18 years.
- BMI of: ≥30 kg/m2 or ≥27.0 kg/m2 to <30.0 kg/m2 and must have at least 1 of the following weight-related co-morbidities: hypertension, dyslipidemia, obstructive sleep apnea, cardiovascular disease, or T2D.
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (81)
Sites in registry order. Save your city in your profile to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Associação de Amparo à Saúde, Ensino e Pesquisa Coordinator of this site? Confirm its status | Brasília | Brazil | Recruiting |
| Saraiva & Berlinger Ltda EPP Instituto de Pesquisa Clínica de Campinas Coordinator of this site? Confirm its status | Campinas | Brazil | Recruiting |
| Fundacao Faculdade Regional de Medicina de Sao Jose do Rio Preto Coordinator of this site? Confirm its status | São José do Rio Preto | Brazil | Recruiting |
| Hospital das Clinicas da Faculdade de Medicina da USP Coordinator of this site? Confirm its status | São Paulo | Brazil | Recruiting |
| CEPIC - Centro Paulista de Investigação Clínica Coordinator of this site? Confirm its status | São Paulo | Brazil | Recruiting |
| Winterberry Research Inc. Coordinator of this site? Confirm its status | Hamilton | Canada | Recruiting |
| The Wharton Medical Clinic Clinical Trials Inc Coordinator of this site? Confirm its status | Hamilton | Canada | Recruiting |
| GA Research Associates Ltd. Coordinator of this site? Confirm its status | Moncton | Canada | Recruiting |
| Ocean West Research Clinic Coordinator of this site? Confirm its status | Surrey | Canada | Recruiting |
| Canadian Phase Onward Inc. Coordinator of this site? Confirm its status | Toronto | Canada | Recruiting |
| Herz Und Diabeteszentrum NRW Bad Oeynhausen Universitaetsklinik Der Ruhr-Universitaet Bochum Coordinator of this site? Confirm its status | Bad Oeynhausen | Germany | Recruiting |
| Universitaetsklinikum Schleswig-Holstein AöR Coordinator of this site? Confirm its status | Luebeck | Germany | Recruiting |
| R.E.D. Institut fuer medizinische Studien und Fortbildung GmbH Coordinator of this site? Confirm its status | Oldenburg in Holstein | Germany | Recruiting |
| Klinische Forschung Schwerin GmbH Coordinator of this site? Confirm its status | Schwerin | Germany | Recruiting |
| Instituto Medico Quirurgico San Rafael S.A. Coordinator of this site? Confirm its status | A Coruna | Spain | Recruiting |
| Hospital Universitario Ramón y Cajal Coordinator of this site? Confirm its status | Madrid | Spain | Recruiting |
| Hospital General Universitario Gregorio Marañón Coordinator of this site? Confirm its status | Madrid | Spain | Recruiting |
| Hospital Universitario Quironsalud Madrid Coordinator of this site? Confirm its status | Pozuelo de Alarcón | Spain | Recruiting |
| University Hospital Virgen Del Rocio S.L. Coordinator of this site? Confirm its status | Sevilla | Spain | Recruiting |
| Centre Hospitalier Universitaire de Montpellier Coordinator of this site? Confirm its status | Montpellier | France | Recruiting |
| Assistance Publique Hopitaux de Paris Coordinator of this site? Confirm its status | Paris | France | Recruiting |
| Centre Hospitalier Universitaire de Nantes Coordinator of this site? Confirm its status | Saint-Herblain | France | Recruiting |
| Azienda Ospedaliero-Universitaria Di Bologna IRCCS Istituto Di Ricerca E Di Cura A Carattere Scientifico Coordinator of this site? Confirm its status | Bologna | Italy | Recruiting |
| Universita' Degli Studi G. D'Annunzio Di Chieti Coordinator of this site? Confirm its status | Chieti Scalo | Italy | Recruiting |
| Azienda Ospedaliera Universitaria Policlinico Paolo Giaccone Coordinator of this site? Confirm its status | Palermo | Italy | Recruiting |
| Fondazione Policlinico Universitario Campus Bio-medico In Forma A Bbreviata Fon Coordinator of this site? Confirm its status | Rome | Italy | Recruiting |
| Multimedica S.p.A. Coordinator of this site? Confirm its status | Sesto San Giovanni | Italy | Recruiting |
| Tokyo Center Clinic Coordinator of this site? Confirm its status | Chuo-ku | Japan | Recruiting |
| Tokyo-Eki Center-building Clinic Coordinator of this site? Confirm its status | Chuo-ku | Japan | Recruiting |
| Fukuwa Clinic Coordinator of this site? Confirm its status | Chuo-ku | Japan | Recruiting |
| Medical Corporation Heishinkai ToCROM Clinic Coordinator of this site? Confirm its status | Shinjuku-ku | Japan | Recruiting |
| Medical Corporation Heishinkai OCROM Clinic Coordinator of this site? Confirm its status | Suita | Japan | Recruiting |
| Hallym University Sacred Heart Hospital Coordinator of this site? Confirm its status | Anyang-si | South Korea | Recruiting |
| Konyang University Hospital Coordinator of this site? Confirm its status | Daejeon | South Korea | Recruiting |
| Gachon University Gil Medical Center Coordinator of this site? Confirm its status | Incheon | South Korea | Recruiting |
| Kangbuk Samsung Hospital Coordinator of this site? Confirm its status | Seoul | South Korea | Recruiting |
| Pusan National University Yangsan Hospital Coordinator of this site? Confirm its status | Yangsan | South Korea | Recruiting |
| Instituto de Diabetes, Obesidad y Nutrición S.C. Coordinator of this site? Confirm its status | Cuernavaca | Mexico | Recruiting |
| Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán ''INCMNSZ'' Coordinator of this site? Confirm its status | Mexico City | Mexico | Recruiting |
| Eukarya PharmaSite Coordinator of this site? Confirm its status | Monterrey | Mexico | Recruiting |
| IMED Investigación Médica SC Coordinator of this site? Confirm its status | Monterrey | Mexico | Recruiting |
| Penta Hospitals Badania Kliniczne sp. z o.o. Coordinator of this site? Confirm its status | Gdansk | Poland | Recruiting |
| Gabinety Medyczne MATUSZEK Beata Matyjaszek-Matuszek Prywatna Praktyka Specjalistyczna Coordinator of this site? Confirm its status | Lublin | Poland | Recruiting |
| Centrum Zdrowia Metabolicznego Paweł Bogdański Coordinator of this site? Confirm its status | Poznan | Poland | Recruiting |
| Centrum Medyczne AD-MED Coordinator of this site? Confirm its status | Wrocław | Poland | Recruiting |
| ZDROWIE OSTEO-MEDIC S.C. L. i A. Racewicz, A. i J. Supronik Coordinator of this site? Confirm its status | - | Poland | Recruiting |
| Albuquerque Clinical Trials, Inc. Coordinator of this site? Confirm its status | Albuquerque | United States | Recruiting |
| Ascension Saint Agnes Heart Care Coordinator of this site? Confirm its status | Baltimore | United States | Recruiting |
| San Fernando Valley Health Institute Coordinator of this site? Confirm its status | Canoga Park | United States | Recruiting |
| Northwestern University Coordinator of this site? Confirm its status | Chicago | United States | Recruiting |
| Cedar Crosse Research Center Coordinator of this site? Confirm its status | Chicago | United States | Recruiting |
| Midwest Eye Center Coordinator of this site? Confirm its status | Cincinnati | United States | Recruiting |
| Velocity Clinical Research, Mt. Auburn Coordinator of this site? Confirm its status | Cincinnati | United States | Recruiting |
| Nature Coast Clinical Research Coordinator of this site? Confirm its status | Crystal River | United States | Recruiting |
| Headlands Research California, LLC Coordinator of this site? Confirm its status | Escondido | United States | Recruiting |
| Endeavor Health - Family Medicine Administration Coordinator of this site? Confirm its status | Evanston | United States | Recruiting |
| MediSphere Medical Research Center, LLC Coordinator of this site? Confirm its status | Evansville | United States | Recruiting |
| Aa Mrc Llc Coordinator of this site? Confirm its status | Flint | United States | Recruiting |
| Medication Management LLC Coordinator of this site? Confirm its status | Greensboro | United States | Recruiting |
| PlanIt Research, LLC Coordinator of this site? Confirm its status | Houston | United States | Recruiting |
| PlanIt Research, LLC (Monitoring Room) Coordinator of this site? Confirm its status | Houston | United States | Recruiting |
| West Coast Eye Institute Coordinator of this site? Confirm its status | Lecanto | United States | Recruiting |
| Monroe Biomedical Research Coordinator of this site? Confirm its status | Louisville | United States | Active, not recruiting |
| Louisville Retina, PLLC Coordinator of this site? Confirm its status | Louisville | United States | Active, not recruiting |
| South Broward Research Coordinator of this site? Confirm its status | Miramar | United States | Recruiting |
| ImmuniMet, LLC Coordinator of this site? Confirm its status | Modesto | United States | Recruiting |
| West Coast Medical Associates Coordinator of this site? Confirm its status | New Port Richey | United States | Active, not recruiting |
| Suncoast Clinical Research, Inc. Coordinator of this site? Confirm its status | New Port Richey | United States | Active, not recruiting |
| Weill Cornell Medicine - Comprehensive Weight Control Center Coordinator of this site? Confirm its status | New York | United States | Recruiting |
| York Clinical Research LLC Coordinator of this site? Confirm its status | Norfolk | United States | Recruiting |
| University of Nebraska Medical Center Coordinator of this site? Confirm its status | Omaha | United States | Recruiting |
| Center for Diabetes, Obesity and Metabolism Inc Coordinator of this site? Confirm its status | Pembroke Pines | United States | Recruiting |
| Rochester Clinical Research, LLC Coordinator of this site? Confirm its status | Rochester | United States | Active, not recruiting |
| Clinical Trials Research Coordinator of this site? Confirm its status | Sacramento | United States | Recruiting |
| VIP Trials Coordinator of this site? Confirm its status | San Antonio | United States | Recruiting |
| Endeavor Health- Endocrinology Research Coordinator of this site? Confirm its status | Skokie | United States | Recruiting |
| University Clinical Investigators, Inc. Coordinator of this site? Confirm its status | Tustin | United States | Recruiting |
| Diablo Clinical Research, Inc. Coordinator of this site? Confirm its status | Walnut Creek | United States | Recruiting |
| Southern California Retina Specialists Coordinator of this site? Confirm its status | West Hills | United States | Recruiting |
| Accellacare - Wilmington Coordinator of this site? Confirm its status | Wilmington | United States | Recruiting |
| Jeffrey Coleman, OD Coordinator of this site? Confirm its status | Wilmington | United States | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.