A Study to Compare Two Different Formulations of Mirikizumab in Healthy Participants

Relative Bioavailability of a Mirikizumab Test Formulation Compared to the Reference Formulation in Healthy Subjects

The purpose of this study is to compare two different formulations of mirikizumab in healthy participants. This study will compare how much of each formulation gets into the blood stream and how long it takes the body to remove it. Information about any side effects that may occur will also be collected. Participants will remain in the study for about 12 weeks, after receiving study drug.

Inclusion Criteria:

• Are overtly healthy males or females, as determined through medical history and physical examination

Exclusion Criteria:

• Must not have an average weekly alcohol intake that exceeds 21 units/week (males) and 14 units/week (females)
• Must not show evidence of active or latent tuberculosis (TB)
• Must not have received live vaccine(s) (including attenuated live vaccines and those administered intranasally) within 8 weeks of screening, or intend to during the study
• Must not have been treated with steroids within 1 month of screening, or intend to during the study
• Must not be immunocompromised
• Must not have received treatment with biologic agents (e.g. monoclonal antibodies, including marketed drugs) within 3 months or 5 half-lives (whichever is longer) prior to Day 1
• Must not have clinically significant multiple or severe drug allergies, or intolerance to topical corticosteroids, or severe post treatment hypersensitivity reactions
• Must not have had lymphoma, leukemia, or any malignancy within the past 5 years except for basal cell or squamous epithelial carcinomas of the skin that have been resected with no evidence of metastatic disease for 3 years
• Must not have had breast cancer within the past 10 years
• Must not have significant allergies to humanized monoclonal antibodies
• Must not have clinically significant multiple or severe drug allergies, or intolerance to topical corticosteroids, or severe post treatment hypersensitivity reactions