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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
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

Full criteria on ClinicalTrials.gov

Sites (81)

Sites in registry order. Save your city in your profile to sort them by distance.

SiteCityCountrySite status
Associação de Amparo à Saúde, Ensino e Pesquisa
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BrasíliaBrazilRecruiting
Saraiva & Berlinger Ltda EPP Instituto de Pesquisa Clínica de Campinas
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CampinasBrazilRecruiting
Fundacao Faculdade Regional de Medicina de Sao Jose do Rio Preto
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São José do Rio PretoBrazilRecruiting
Hospital das Clinicas da Faculdade de Medicina da USP
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São PauloBrazilRecruiting
CEPIC - Centro Paulista de Investigação Clínica
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São PauloBrazilRecruiting
Winterberry Research Inc.
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HamiltonCanadaRecruiting
The Wharton Medical Clinic Clinical Trials Inc
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HamiltonCanadaRecruiting
GA Research Associates Ltd.
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MonctonCanadaRecruiting
Ocean West Research Clinic
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SurreyCanadaRecruiting
Canadian Phase Onward Inc.
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TorontoCanadaRecruiting
Herz Und Diabeteszentrum NRW Bad Oeynhausen Universitaetsklinik Der Ruhr-Universitaet Bochum
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Bad OeynhausenGermanyRecruiting
Universitaetsklinikum Schleswig-Holstein AöR
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LuebeckGermanyRecruiting
R.E.D. Institut fuer medizinische Studien und Fortbildung GmbH
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Oldenburg in HolsteinGermanyRecruiting
Klinische Forschung Schwerin GmbH
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SchwerinGermanyRecruiting
Instituto Medico Quirurgico San Rafael S.A.
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A CorunaSpainRecruiting
Hospital Universitario Ramón y Cajal
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MadridSpainRecruiting
Hospital General Universitario Gregorio Marañón
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MadridSpainRecruiting
Hospital Universitario Quironsalud Madrid
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Pozuelo de AlarcónSpainRecruiting
University Hospital Virgen Del Rocio S.L.
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SevillaSpainRecruiting
Centre Hospitalier Universitaire de Montpellier
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MontpellierFranceRecruiting
Assistance Publique Hopitaux de Paris
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ParisFranceRecruiting
Centre Hospitalier Universitaire de Nantes
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Saint-HerblainFranceRecruiting
Azienda Ospedaliero-Universitaria Di Bologna IRCCS Istituto Di Ricerca E Di Cura A Carattere Scientifico
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BolognaItalyRecruiting
Universita' Degli Studi G. D'Annunzio Di Chieti
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Chieti ScaloItalyRecruiting
Azienda Ospedaliera Universitaria Policlinico Paolo Giaccone
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PalermoItalyRecruiting
Fondazione Policlinico Universitario Campus Bio-medico In Forma A Bbreviata Fon
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RomeItalyRecruiting
Multimedica S.p.A.
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Sesto San GiovanniItalyRecruiting
Tokyo Center Clinic
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Chuo-kuJapanRecruiting
Tokyo-Eki Center-building Clinic
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Chuo-kuJapanRecruiting
Fukuwa Clinic
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Chuo-kuJapanRecruiting
Medical Corporation Heishinkai ToCROM Clinic
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Shinjuku-kuJapanRecruiting
Medical Corporation Heishinkai OCROM Clinic
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SuitaJapanRecruiting
Hallym University Sacred Heart Hospital
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Anyang-siSouth KoreaRecruiting
Konyang University Hospital
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DaejeonSouth KoreaRecruiting
Gachon University Gil Medical Center
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IncheonSouth KoreaRecruiting
Kangbuk Samsung Hospital
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SeoulSouth KoreaRecruiting
Pusan National University Yangsan Hospital
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YangsanSouth KoreaRecruiting
Instituto de Diabetes, Obesidad y Nutrición S.C.
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CuernavacaMexicoRecruiting
Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán ''INCMNSZ''
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Mexico CityMexicoRecruiting
Eukarya PharmaSite
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MonterreyMexicoRecruiting
IMED Investigación Médica SC
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MonterreyMexicoRecruiting
Penta Hospitals Badania Kliniczne sp. z o.o.
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GdanskPolandRecruiting
Gabinety Medyczne MATUSZEK Beata Matyjaszek-Matuszek Prywatna Praktyka Specjalistyczna
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LublinPolandRecruiting
Centrum Zdrowia Metabolicznego Paweł Bogdański
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PoznanPolandRecruiting
Centrum Medyczne AD-MED
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WrocławPolandRecruiting
ZDROWIE OSTEO-MEDIC S.C. L. i A. Racewicz, A. i J. Supronik
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-PolandRecruiting
Albuquerque Clinical Trials, Inc.
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AlbuquerqueUnited StatesRecruiting
Ascension Saint Agnes Heart Care
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BaltimoreUnited StatesRecruiting
San Fernando Valley Health Institute
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Canoga ParkUnited StatesRecruiting
Northwestern University
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ChicagoUnited StatesRecruiting
Cedar Crosse Research Center
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ChicagoUnited StatesRecruiting
Midwest Eye Center
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CincinnatiUnited StatesRecruiting
Velocity Clinical Research, Mt. Auburn
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CincinnatiUnited StatesRecruiting
Nature Coast Clinical Research
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Crystal RiverUnited StatesRecruiting
Headlands Research California, LLC
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EscondidoUnited StatesRecruiting
Endeavor Health - Family Medicine Administration
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EvanstonUnited StatesRecruiting
MediSphere Medical Research Center, LLC
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EvansvilleUnited StatesRecruiting
Aa Mrc Llc
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FlintUnited StatesRecruiting
Medication Management LLC
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GreensboroUnited StatesRecruiting
PlanIt Research, LLC
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HoustonUnited StatesRecruiting
PlanIt Research, LLC (Monitoring Room)
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HoustonUnited StatesRecruiting
West Coast Eye Institute
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LecantoUnited StatesRecruiting
Monroe Biomedical Research
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LouisvilleUnited StatesActive, not recruiting
Louisville Retina, PLLC
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LouisvilleUnited StatesActive, not recruiting
South Broward Research
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MiramarUnited StatesRecruiting
ImmuniMet, LLC
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ModestoUnited StatesRecruiting
West Coast Medical Associates
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New Port RicheyUnited StatesActive, not recruiting
Suncoast Clinical Research, Inc.
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New Port RicheyUnited StatesActive, not recruiting
Weill Cornell Medicine - Comprehensive Weight Control Center
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New YorkUnited StatesRecruiting
York Clinical Research LLC
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NorfolkUnited StatesRecruiting
University of Nebraska Medical Center
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OmahaUnited StatesRecruiting
Center for Diabetes, Obesity and Metabolism Inc
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Pembroke PinesUnited StatesRecruiting
Rochester Clinical Research, LLC
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RochesterUnited StatesActive, not recruiting
Clinical Trials Research
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SacramentoUnited StatesRecruiting
VIP Trials
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San AntonioUnited StatesRecruiting
Endeavor Health- Endocrinology Research
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SkokieUnited StatesRecruiting
University Clinical Investigators, Inc.
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TustinUnited StatesRecruiting
Diablo Clinical Research, Inc.
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Walnut CreekUnited StatesRecruiting
Southern California Retina Specialists
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West HillsUnited StatesRecruiting
Accellacare - Wilmington
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WilmingtonUnited StatesRecruiting
Jeffrey Coleman, OD
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WilmingtonUnited StatesRecruiting

This page is information, not medical advice. Discuss any trial with your doctor.