How different doses of PF-08642534 behave in adults with obesity
Official title: A PHASE 1, RANDOMIZED, DOUBLE-BLIND, SPONSOR-OPEN, PLACEBO-CONTROLLED STUDY TO INVESTIGATE SAFETY, TOLERABILITY AND PHARMACOKINETICS OF MULTIPLE ASCENDING ORAL DOSES OF PF-08642534 IN ADULTS WITH OBESITY
Run by Pfizer · NCT07731139 · Data updated 2026-11-12
This study tests varying doses of PF-08642534 to see if adults with obesity can take them safely and how the body handles the drug.
Quick facts
| Phase | Phase 1 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 70 Years |
| Sex | All |
| Enrollment | 120 (estimated) |
| Sponsor | Pfizer Industry-sponsored |
| Locations | 1 site (Lake Forest, California) |
| Status | Recruiting |
| Started | July 28, 2026 |
| Main results expected | April 21, 2027 |
| Study ends | April 21, 2027 |
| Registry record updated | September 23, 2026 |
| Trial ID | NCT07731139 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults with BMI 30 to 40 kg/m² who are otherwise healthy or have only mild chronic conditions and have stable body weight.
✕Probably not a fit
Those with diabetes, significant cardiovascular, liver, kidney, or psychiatric conditions, or conditions affecting drug absorption or metabolism may not benefit and are excluded.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This early-phase study evaluates multiple dose levels of PF-08642534 in adults with obesity to assess safety and how the drug is absorbed, distributed, metabolized, and eliminated. The trial includes a screening period to check eligibility, with healthy-appearing participants who may have mild chronic conditions. Participants are assigned to receive either PF-08642534 at different doses or a placebo, under close medical supervision. The study excludes individuals with diabetes or significant other health issues that could affect drug metabolism or safety. Conducted at the Orange County Research Center, the trial is sponsored by Pfizer to characterize tolerability and pharmacokinetics in this population.
Why it matters
Potential benefit: If successful, participants may gain information about safe dosing ranges and how the drug behaves in the body for people with obesity.
How similar studies have gone: Previous similar early-phase studies in obesity-related indications have shown how dose-ranging can reveal safe levels and pharmacokinetics, though this exact drug's data are limited so far.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion: * Body mass index (BMI) ≥30.0 and ≤40.0 kg/m², and with stable body weight prior to screening. * Participants are generally otherwise healthy but may have mild chronic conditions (eg, dyslipidemia or hypertension) Exclusion: \- Individuals with diabetes, significant cardiovascular, hepatic, renal, gastrointestinal, or psychiatric disorders, or conditions that may affect drug absorption or metabolism, are not eligible to participate.
Where it's running
-
Orange County Research Center
Lake Forest, California, United States 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.