A Study to Learn How Different Amounts of the Study Medicine Called PF-08103402 Are Tolerated and Act in the Body in Healthy Adults or Adults With Mild To-moderate Asthma

Summary

The purpose of this study is to learn about the safety of a new study medicine called PF-08103402 in healthy adults (do not have disease) and or in adults with mild-to-moderate asthma. This is the first time the study medicine is being given to people. For Parts A, B, C, D and F, the study is seeking participants who: Are healthy (do not have disease) males or females who can no longer have children, Are 18 to 65 years old, Have a body mass index (BMI) of 16 to 32 kilograms per meter squared and a body weight of more than 50 kilograms (110 pounds).

Shortened from the sponsor's brief summary. View official record on ClinicalTrials.gov

Conditions studied

• Healthy Volunteer Study
• Healthy Adults
• Healthy Participants
• Asthma

Eligibility basics and study details

Study type

Interventional

Phase

Phase 1

Ages

18 to 65 years

Sex

All

Healthy volunteers

Accepted

Sponsor

Pfizer

Last updated on ClinicalTrials.gov

October 13, 2026

These are the basic criteria only. The full inclusion and exclusion criteria are on the official record, and the study team decides who can take part.

US recruiting sites