A Study to Evaluate the Efficacy and Safety of Mirikizumab (LY3074828) in Participants With Moderate-to-Severe Plaque Psoriasis

Inclusion Criteria:

Present with chronic plaque psoriasis based on an investigator confirmed diagnosis of chronic psoriasis vulgaris for at least 6 months prior to baseline and meet the following criteria:

plaque psoriasis involving ≥10% BSA and absolute PASI score ≥12 in affected skin at screening and baseline
sPGA score of ≥3 at screening and baseline
Candidate for systemic therapy and/or phototherapy for psoriasis.

Exclusion Criteria:

Have an unstable or uncontrolled illness, including but not limited to a cerebro-cardiovascular, respiratory, hepatic, renal, gastrointestinal, endocrine, hematologic, or neurologic disease or abnormal laboratory values at screening, that in the opinion of the investigator, would potentially affect participant safety within the study or of interfering with the interpretation of data.
Breastfeeding or nursing women.
Have had serious, opportunistic, or chronic/recurring infection within 3 months prior to screening.
Have received a Bacillus Calmette-Guerin (BCG) vaccination within 12 months or received live vaccine(s) (including attenuated live vaccines) within 12 weeks of baseline or intend to receive either during the study.
Have any other skin conditions (excluding psoriasis) that would affect interpretation of the results.
Have received systemic nonbiologic psoriasis therapy or phototherapy within 28 days prior to baseline.
Have received topical psoriasis treatment within 14 days prior to baseline.
Have received anti-tumor necrosis factor (TNF) biologics, or anti-interleukin (IL)-17 targeting biologics within 12 weeks prior to baseline.
Have previous exposure to any biologic therapy targeting IL-23 (including ustekinumab), either licensed or investigational.