Berobenatide once a month for obesity in adults in Japan
Official title: A PHASE 3, RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED STUDY TO ASSESS THE EFFICACY AND SAFETY OF ONCE-MONTHLY BEROBENATIDE IN ADULTS WITH OBESITY DISEASE IN JAPAN (VESPER-JM)
Run by Pfizer · NCT07794774 · Data updated 2026-11-12
This study tests whether berobenatide can help adults with obesity in Japan, compared to a placebo, when given as a monthly injection.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 197 (estimated) |
| Sponsor | Pfizer Industry-sponsored |
| Locations | 36 sites (Mihama-ku, Chiba and 35 other locations) |
| Status | Recruiting |
| Started | September 29, 2026 |
| Main results expected | February 21, 2029 |
| Study ends | February 21, 2029 |
| Registry record updated | November 6, 2026 |
| Trial ID | NCT07794774 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 18 and older with obesity disease in Japan, with BMI 27–<35 with at least two obesity-related health disorders or BMI ≥35 with at least one obesity-related health disorder, including hypertension, dyslipidemia, or glucose intolerance.
✕Probably not a fit
Individuals with certain medical histories or comorbidities may not experience weight loss or may have limited benefit from berobenatide.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a Phase 3, randomized, double-blind, placebo-controlled trial enrolling about 197 adults with obesity disease in Japan. Participants will be assigned to receive berobenatide or placebo via subcutaneous injections once a month and will be followed to assess safety and effects on weight and related health measures. Key eligibility includes adults with BMI in a defined range and at least one obesity-related condition, such as hypertension or dyslipidemia, with some participants also having type 2 diabetes. The study is sponsored by Pfizer and is conducted at multiple clinics in Japan. Primary outcomes focus on safety and weight-related efficacy during the treatment period.
Why it matters
Potential benefit: If successful, participants may experience weight loss and improvements in obesity-related health conditions.
How similar studies have gone: Trials of similar obesity therapies have shown potential weight loss benefits, but this exact pharmacologic agent and population are being studied anew in this trial.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Aged ≥18 years. * BMI of: ≥27.0 kg/m2 to \<35.0 kg/m2 with ≥2 obesity-related health disorders or BMI of ≥35.0 kg/m2 with ≥1 obesity-related health disorder. The participant must have at least one of either hypertension, dyslipidemia or glucose intolerance (T2D and impaired glucose tolerance etc.) as an obesity-related health disorder. Exclusion Criteria: * Have a self-reported body weight change greater than 5% within 90 days prior to Screening. * 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).
Where it's running
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Tokuyama Clinic
Mihama-ku, Chiba, Japan Recruiting -
Mikannohana Clinic, Diabetes, Endocrinology and Metabolism
Matsuyama, Ehime, Japan Recruiting -
Matsuyama Shimin Hospital
Matsuyama, Ehime, Japan Recruiting -
Tenjin Sogo Clinic
Fukuoka, Fukuoka, Japan Recruiting -
Medical Corporation BOOCS BOOCS CLINIC FUKUOKA
Fukuoka, Fukuoka, Japan Recruiting -
Fukuoka Diagnostic Imaging Clinic Me-Well
Fukuoka, Fukuoka, Japan Recruiting
Show 30 more locations
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Oishi Clinic
Kasuya-gun, Fukuoka, Japan Recruiting -
Manda Memorial Hospital
Sapporo, Hokkaido, Japan Recruiting -
Yamasaki Family Clinic
Amagasaki, Hyōgo, Japan Recruiting -
Nishiyamado Keiwa Hospital
Naka, Ibaraki, Japan Recruiting -
Olive Takamatsu Medical Clinic
Takamatsu, Kagawa-ken, Japan Recruiting -
Medical Corporation Hitomikai Motomachi Takatsuka Naika Clinic
Yokohama, Kanagawa, Japan Recruiting -
Yokoi Clinic
Minoh, Osaka, Japan Recruiting -
Kanemura Clinic
Osaka-shi Ikuno-ku, Osaka, Japan Recruiting -
Medical Corporation Heishinkai OCROM Clinic
Suita, Osaka, Japan Recruiting -
MI Clinic, Medical Corporation Jinsenkai
Toyonaka-shi, Osaka, Japan Recruiting -
Soka Sugiura Internal medicine Clinic
Soka-shi, Saitama, Japan Recruiting -
Saiyu Soka Hospital
Soka-shi, Saitama, Japan Recruiting -
Doujin Memorial Foundation Meiwa Hospital
Chiyoda-ku, Tokyo, Japan Recruiting -
Aic Yaesu Clinic
Chuo-ku, Tokyo, Japan Recruiting -
Tokyo Center Clinic
Chuo-ku, Tokyo, Japan Recruiting -
Tokyo-Eki Center-building Clinic
Chuo-ku, Tokyo, Japan Recruiting -
Fukuwa Clinic
Chuo-ku, Tokyo, Japan Recruiting -
Tokyo Asbo Clinic
Chuo-ku, Tokyo, Japan Recruiting -
Medical Corp. Seikoukai New Medical Research System Clinic
Hachioji-shi, Tokyo, Japan Recruiting -
Hachioji Clinic Shincho
Hachioji-shi, Tokyo, Japan Recruiting -
Keikokai Medical Corporation P-one Clinic
Hachiōji, Tokyo, Japan Recruiting -
Patient First Clinic Ginza-Shimbashi
Minato-ku, Tokyo, Japan Recruiting -
Shimamura Memorial Hospital
Nerima-ku, Tokyo, Japan Recruiting -
Medical Corporation Heishinkai ToCROM Clinic
Shinjuku-ku, Tokyo, Japan Recruiting -
Seeds Clinic Shinjuku-Sanchome, Eijinkai Medical Corporation
Shinjuku-ku, Tokyo, Japan Recruiting -
Higashi-Shinjuku Clinic, Keikokai Medical Corp.
Shinjuku-ku, Tokyo, Japan Recruiting -
Ikebukuro Metropolitan Clinic
Toshima-ku, Tokyo, Japan Recruiting -
Nihonbashi Sakura Clinic
Tokyo, Japan Recruiting -
Minami Akatsuka Clinic
Mito, Ibaraki, Japan Not yet recruiting -
Mito Saiseikai General Hospital
Mito, Ibaraki, Japan Not yet recruiting
Study contacts
- Study coordinator: Pfizer CT.gov Call Center
- Email: ClinicalTrials.gov_Inquiries@pfizer.com
- Phone: 1-800-718-1021
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Other studies for the same condition or treatment. Recruiting studies are listed first.
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-
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-
Berobenatide for knee pain in adults who are overweight or with obesity
This study tests berobenatide vs. placebo to see if it reduces knee pain and improves function while helping with weight in adults with knee osteoarthritis and overweight/obesity.
-
Weekly berobenatide for knee osteoarthritis in adults who are overweight or obese
This study tests whether weekly berobenatide helps reduce knee pain and improve function, while also affecting body weight, in adults with knee osteoarthritis who are overweight or obese (with or without type 2 diabetes).
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Maridebart cafraglutide in people who switched from weekly GLP-1 receptor agonists
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.