Berobenatide in adults with sleep apnea and obesity who don’t use a PAP machine
Official title: A PHASE 3, RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED STUDY TO ASSESS THE EFFICACY AND SAFETY OF ONCE-MONTHLY BEROBENATIDE IN ADULTS WITH OBSTRUCTIVE SLEEP APNEA AND OVERWEIGHT OR OBESITY NOT RECEIVING POSITIVE AIRWAY PRESSURE THERAPY (VESPER-OSA 2)
Run by Pfizer · NCT07881757 · Data updated 2026-11-12
This study tests berobenatide versus placebo in adults with moderate-to-severe obstructive sleep apnea and overweight or obesity who are not using PAP therapy.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 258 (estimated) |
| Sponsor | Pfizer Industry-sponsored |
| Locations | 4 sites (Cullman, Alabama and 3 other locations) |
| Status | Recruiting |
| Started | October 19, 2026 |
| Main results expected | June 1, 2028 |
| Study ends | July 20, 2028 |
| Registry record updated | November 6, 2026 |
| Trial ID | NCT07881757 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults 18+ with BMI ≥27 kg/m², diagnosed moderate-to-severe OSA, and not using PAP therapy for at least 4 weeks.
✕Probably not a fit
People with diabetes (current), pancreatitis history, or certain thyroid cancer syndromes may not benefit and could be excluded due to safety concerns.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This Phase 3 trial evaluates the safety and effects of monthly berobenatide injections in adults with obstructive sleep apnea and overweight or obesity who have not used a PAP device for at least four weeks. Participants are randomly assigned to receive either berobenatide or a placebo and will attend scheduled study visits, with some doses potentially self-administered at home after training. The study uses standard clinical trial procedures to monitor sleep, symptoms, and adverse events. Enrollment targets adults 18 and older with BMI ≥27 kg/m² and a prior OSA diagnosis. Exclusion criteria include recent significant weight change, diabetes (with some exceptions), pancreatitis history, and certain thyroid cancer syndromes to minimize risk and confounding results.
Why it matters
Potential benefit: If successful, berobenatide could offer a new treatment option for adults with sleep apnea and obesity who cannot or will not use PAP therapy.
How similar studies have gone: Prior studies with similar peptide therapies in OSA have shown promise but this specific approach is being tested in a comparable patient population.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Adults aged 18 years or older * Body mass index (BMI) ≥27 kg/m² at screening * Previously diagnosed with moderate to severe obstructive sleep apnea (OSA) * Unable or unwilling to use positive airway pressure (PAP) therapy, and no use of PAP therapy for at least 4 weeks prior to screening Exclusion Criteria: * Self-reported body weight change of more than 5% within 90 days prior to screening * Diagnosis of any type of diabetes (resolved gestational diabetes is permitted) * History of acute or chronic pancreatitis * Personal or family history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia type 2 (MEN 2) Sleep-disordered breathing conditions other than obstructive sleep apnea that could interfere with study assessments or interpretation of results (eg, central sleep apnea, mixed sleep apnea, Cheyne-Stokes respiration, obesity hypoventilation syndrome, or significant craniofacial abnormalities).
Where it's running
-
Cullman Clinical Trials
Cullman, Alabama, United States Recruiting -
DM Clinical Research-Bradenton
Bradenton, Florida, United States Recruiting -
Headlands Research - Twin Cities
Maplewood, Minnesota, United States Recruiting -
DM Clinical Research-Tomball
Tomball, Texas, United States 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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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.