A Study to Learn About the Study Medicine Called PF-07275315 in People With Moderate-To-Severe Asthma

The purpose of this clinical trial is to learn about the safety and effects of the study medicine (called PF-07275315) for the potential treatment of moderate-to-severe asthma. Asthma is a condition that makes it challenging to breathe, which negatively impacts the quality of life and functioning of people who are affected. This study is seeking participants who: * Are 18 to 75 years old * Have had moderate-to-severe asthma for at least 12 months that is not well controlled * Have been taking their regular maintenance treatment(s) for asthma over the last 6 months All participants will receive PF-07275315 or a placebo. A placebo does not have any medicine in it but looks just like the medicine being studied. PF-07275315 or placebo will be given as multiple shots in the clinic over the course of 12 weeks. We will compare the experiences of people receiving PF-07275315 to those of the people who do not. This will help us determine if PF-07275315 is safe and effective. Participants will be involved in this study for up to approximately 9.5 months depending on local requirements.

Inclusion Criteria: Must meet the following asthma criteria: 1. History of persistent, moderate-to-severe asthma for at least 12 months prior to screening. 2. Must have experienced at least 1 asthma exacerbation requiring treatment with systemic steroids (oral or parenteral) for 3 days or more within 24 months of the screening visit. 3. At least 2 of the 3 pre-bronchodilator FEV1 values collected in the run-in period and the mean of the of pre-bronchodilator FEV1 values collected in the run-in period are ≥30% to \