NCT07731139 · Pfizer
A Study to Learn How Different Amounts of the Study Medicine Called PF-08642534 Are Tolerated and Act in the Body of People Who Have Obesity
What this study is about
This study will look at a study drug called PF-08642534 in people with obesity (have too much body weight) to see: if participants can take different amounts (doses) of the study drug in a safe way and how adults with obesity tolerate it, and how the body handles the study drug (for example, how the study drug is absorbed and removed from the body).
View original scientific description
This study will look at a study drug called PF-08642534 in people with obesity (have too much body weight) to see: if participants can take different amounts (doses) of the study drug in a safe way and how adults with obesity tolerate it, and how the body handles the study drug (for example, how the study drug is absorbed and removed from the body). People who want to join the study will first go through a screening period of up to 4 weeks. Doctors will check if each person meets the study conditions, including age, body weight, and general health. People with certain medical conditions will not be able to take part in the study.
Interventions
DRUG
Placebo
Participants will receive matching placebo QD
DRUG
PF-08642534
Participants will receive PF-08642534 QD
Primary outcome measures
Incidence of treatment emergent adverse events (TEAE)
Time frame: Baseline up to 8 weeks after last dose
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- 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 criteria
- \- 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
- Lake Forest, California
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Sep 23, 2026 · Source of record for eligibility and locations