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CompletedPhase 1

Study of Single Ascending Doses of PF-07081532 in Healthy Adult Participants

A PHASE 1, RANDOMIZED, DOUBLE-BLIND, SPONSOR-OPEN, PLACEBO-CONTROLLED STUDY TO ASSESS THE SAFETY, TOLERABILITY, AND PHARMACOKINETICS OF SINGLE ASCENDING ORAL DOSES OF PF-07081532 IN HEALTHY ADULT PARTICIPANTS

Lead sponsor

Pfizer

Asset

Lotiglipron

Oral · GLP-1 agonist

Listed sites

1

Recruiting sites

Enrollment

22

actual

Study population

Healthy volunteers

Key I/E criteria

BMI 17.5-30.5Healthy volunteers

Primary endpoints

Treatment-emergent AEs (any)Safety laboratory test results above/below certain thresholdVital signs above/below certain threshold

Footprint

Where this trial recruits

Site locations as reported to ClinicalTrials.gov. Site count is not enrollment count; per-site enrollment is not available from source.

Identifiers

Registered as

NCT IDNCT04148209
Org study IDC3991001
Secondary ID2019-003012-30

Timeline

Milestones

Study first posted2019-11-01actual
Study start2019-11-05actual
Primary completion2020-03-17actual
Study completion2020-03-17actual
Last update posted2020-03-25actual

Assets

Investigational agents

Study populations

Who this study enrolls

Healthy volunteers

Eligibility

Who can enroll

Minimum age18 Years
Maximum age55 Years
SexAll
Healthy volunteersAccepted

Inclusion criteria

1. Male and female (of non-childbearing potential) participants must be 18 to 55 years of age, inclusive, at the time of signing the informed consent document (ICD).

2. Male and female participants who are overtly healthy as determined by medical evaluation including medical history, physical examination, including blood pressure (BP) and pulse rate measurement, temperature, standard 12-lead ECG, telemetry and laboratory tests.

3. Participants who are willing and able to comply with all scheduled visits, treatment plan, laboratory tests, lifestyle considerations, and other study procedures. Note that participants enrolling as Japanese must have 4 biological Japanese grandparents who were born in Japan.

4. Body mass index (BMI) of 17.5 to 30.5 kg/m2; and a total body weight >50 kg (110 lb).

5. Capable of giving signed informed consent as described in Appendix 1, which includes compliance with the requirements and restrictions listed in the ICD and in the protocol.

Exclusion criteria

1. Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal (including pancreatitis), cardiovascular, hepatic, psychiatric, neurological, dermatological, or allergic disease (including drug allergies, but excluding untreated, asymptomatic, seasonal allergies at the time of dosing).

2. Any condition possibly affecting drug absorption (eg, gastrectomy, cholecystectomy).

3. History of human immunodeficiency virus (HIV) infection, hepatitis B, or hepatitis C; positive testing at screening for HIV, hepatitis B surface antigen (HBsAg), hepatitis B core antibody (HBcAb), hepatitis B surface antibody (HBsAb) or hepatitis C antibody (HCVAb).

4. Personal or family history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia syndrome type 2 (MEN2), or participants with suspected MTC per the investigator's judgement.

5. Other acute or chronic medical or psychiatric condition including recent (within the past year) or active suicidal ideation or behavior or laboratory abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the participant inappropriate for entry into this study.

6. Use of prescription or nonprescription drugs and dietary and herbal supplements within 7 days or 5 half-lives (whichever is longer) prior to the first dose of investigational product.

7. Previous administration with an investigational drug within 30 days (or as determined by the local requirement) or 5 half-lives preceding the first dose of investigational product used in this study (whichever is longer).

8. A positive urine drug test at screening or admission.

9. Screening supine BP >=140 mm Hg (systolic) or >=90 mm Hg (diastolic), following at least 5 minutes of supine rest.

10. Screening standard 12-lead single ECG that demonstrates clinically relevant abnormalities that may affect participant safety or interpretation of study results (eg, baseline Fridericia-corrected QT [QTcF] interval >450 msec, complete left bundle branch block [LBBB], signs of an acute or indeterminate-age myocardial infarction, ST-T interval changes suggestive of myocardial ischemia, second- or third-degree atrioventricular [AV] block, or serious bradyarrhythmias or tachyarrhythmias).

11. Participants with ANY of the following abnormalities in clinical laboratory tests at screening, as assessed by the study-specific laboratory and confirmed by a single repeat test, if deemed necessary: Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) level >=1.25 × upper limit of normal (ULN); total bilirubin level >=1.5 × ULN, participants with a history of Gilbert's syndrome may have direct bilirubin measured and would be eligible for this study provided the direct bilirubin level is <= ULN; TSH > ULN; HbA1c >= 6.5%.

12. History of alcohol abuse or binge drinking and/or any other illicit drug use or dependence within 6 months of Screening.

13. Use of tobacco/nicotine containing products more than 5 cigarettes/day.

14. Blood donation (excluding plasma donations) of approximately 1 pint (500 mL) or more within 60 days prior to dosing.

15. Unwilling or unable to comply with the criteria in the Lifestyle Considerations section of the protocol.

16. Investigator site staff members directly involved in the conduct of the study and their family members, site staff members otherwise supervised by the investigator, or Pfizer employees, including their family members, directly involved in the conduct of the study.

Endpoints (9)

What's being measured

Protocol endpoints and posted registry outcome measures, grouped into outcome categories. Composite endpoints show their component event types. Standard codes (LOINC, SNOMED CT) are shown where available.

Safety / tolerability / PK

9 endpoints
Primary/protocol endpoint

Percentage of participants with adverse events

Time frame:From screening until follow-up call (28-35 days after the last dose of investigational product)

Treatment-emergent AEs (any)

threshold achievement, event

Primary/protocol endpoint

Percentage of participants with safety laboratory test results above/below certain threshold

Time frame:Days -1, 2 and 4 of each period and at follow-up visit (7-14 days after the last dose of investigational product)

threshold achievement, event

Primary/protocol endpoint

Percentage of participants with vital signs above/below certain threshold

Time frame:Days 1-4 of each period and at follow-up visit (7-14 days after the last dose of investigational product)

threshold achievement, event

Primary/protocol endpoint

Percentage of participants with 12-lead electrocardiogram (ECG) results above/below certain threshold

Time frame:Days 1-4 of each period and at follow-up visit (7-14 days after the last dose of investigational product)

threshold achievement, event

Secondary/protocol endpoint/low confidence

PF-07081532 AUClast

Time frame:Days 1-4 of each period

concentration, descriptive

Secondary/protocol endpoint

PF-07081532 AUCinf

Time frame:Days 1-4 of each period

AUC₀–∞

concentration, descriptive

Secondary/protocol endpoint

PF-07081532 Cmax

Time frame:Days 1-4 of each period

Cmax

concentration, descriptive

Secondary/protocol endpoint

PF-07081532 Tmax

Time frame:Days 1-4 of each period

Tmax

descriptive

Secondary/protocol endpoint

PF-07081532 t1/2

Time frame:Days 1-4 of each period

Half-life

descriptive

Provenance

Sources

Trial identity, design, statusClinicalTrials.gov API v2
Snapshot dateJuly 1, 2026
Endpoint classificationDelfa endpoint taxonomy v2 (May 13, 2026)
Results tableno registry results posted yet

Trial facts come from public ClinicalTrials.gov records. Endpoint categories are Delfa's classification of those records, not a ClinicalTrials.gov field. All figures reflect the July 1, 2026 snapshot.