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PF-08642534

Phase 1

Obesity | Small molecule | Metabolic |Pfizer, Inc.|Trials Updated: Sep 23, 2026

PF-08642534 development status

Highest phase Phase 1
Registered trials 2 across 1 sponsor since May 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLED
Total Trials1
Total Enrollment120

FDA Designations

No designations recorded

PF-08642534 clinical trials

PF-08642534 · 1 trial · 1 indication

Phase 1 1
NCT07731139A Study to Learn How Different Amounts of the Study Medicine Called PF-08642534 Are Tolerated and Act in the Body of People Who Have ObesityObesity
RECRUITING120 Analytics
PHASE1RECRUITING
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
ObesityUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence of treatment emergent adverse events (TEAE)
Baseline up to 8 weeks after last dose

Secondary Endpoints

Area Under the Curve From Time Zero to End of Dosing Interval (AUCtau) of PF-08642534
0 (pre-dose), 0.5, 1, 2, 4, 6, 8, 12, 24 hours post-dose
Maximum Observed Plasma Concentration (Cmax) of PF-08642534
0 (pre-dose), 0.5, 1, 2, 4, 6, 8, 12, 24 hours post-dose
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelSEQUENTIAL
PurposeBASIC_SCIENCE

Treatment Arms

ArmTypeDescription
PF-08642534EXPERIMENTALParticipants will receive PF-08642534 QD
PlaceboEXPERIMENTALParticipants will receive matching placebo once daily (QD)

Interventions

NameTypeDescription
PlaceboDRUGParticipants will receive matching placebo QD
PF-08642534DRUGParticipants will receive PF-08642534 QD
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Eligibility Criteria

Age Range18 Years to 70 Years
SexALL
Healthy VolunteersNo
Study Sites1

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, hep...

Countries:United States
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Recent Changes (Last 90 Days)

MEDIUMSep 23, 2026NCT07731139Status: NOT_YET_RECRUITING → RECRUITING
MEDIUMSep 23, 2026NCT07731139Status: NOT_YET_RECRUITING → RECRUITING
LOWJul 28, 2026NCT07731139NEW_TRIAL: changed
LOWJul 28, 2026NCT07731139NEW_TRIAL: changed

Frequently asked questions about PF-08642534

What is PF-08642534?

PF-08642534 is an investigational small molecule developed by Pfizer, Inc. (NYSE: PFE) for the treatment of obesity. It is in Phase 1 clinical development and has not been approved by the FDA. It is being studied in a single recruiting trial in the United States.

What is PF-08642534 used for?

PF-08642534 is being developed for obesity, a metabolic condition. The only registered trial of PF-08642534 enrolls adults 18 years and older with obesity, and it is not currently approved for any use. Its development is at the Phase 1 stage.

Who makes PF-08642534?

Pfizer, Inc. (ticker PFE) is the developer of PF-08642534. The company is running the Phase 1 program for this small molecule obesity candidate, which is being evaluated in a single recruiting study in the United States.

What phase is PF-08642534 in?

PF-08642534 is in Phase 1 clinical development. It is an investigational drug and is not FDA approved. One Phase 1 trial is currently recruiting, with no completed trials reported for this asset.

What clinical trials is PF-08642534 in?

PF-08642534 is being studied in one Phase 1 trial, NCT07731139, titled a study to learn how different amounts of PF-08642534 are tolerated and act in the body of people who have obesity. The trial is recruiting in the United States, is randomized, double blind, and controlled, and plans to enroll 120 participants.