Clinical trial Recruiting at 3 sites Phase 3 Interventional Ages 18 and up

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.

More Overweight and/or Obesity trials

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment258 (estimated)
SponsorPfizer
Industry-sponsored
Locations4 sites (Cullman, Alabama and 3 other locations)
StatusRecruiting
StartedOctober 19, 2026
Main results expectedJune 1, 2028
Study endsJuly 20, 2028
Registry record updatedNovember 6, 2026
Trial IDNCT07881757 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

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.