A Study of Baricitinib (LY3009104) in Children and Adolescents With Atopic Dermatitis

Inclusion Criteria:

• At or above the 5th percentile of weight for age.

• Have been diagnosed with moderate to severe atopic dermatitis for at least 12 months (if 6 years old or older) or at least 6 months (if 2 up to 6 years old).

• Have had inadequate response or intolerance to existing topical (applied to theskin) medications within 6 months preceding screening.

• Are willing to discontinue certain treatments for eczema (such as systemic andtopical treatments during a washout period).

• Agree to use emollients daily.

Exclusion Criteria:

• Are currently experiencing or have a history of other concomitant skin conditions (e.g., psoriasis or lupus erythematosus), or a history of erythrodermic, refractory,or unstable skin disease that requires frequent hospitalizations and/or intravenoustreatment for skin infections.

• A history of eczema herpeticum within 12 months, and/or a history of 2 or moreepisode of eczema herpeticum in the past.

• Participants who are currently experiencing a skin infection that requirestreatment, or is currently being treated, with topical or systemic antibiotics.

• Have any serious illness that is anticipated to require the use of systemiccorticosteroids or otherwise interfere with study participation or require activefrequent monitoring (e.g., unstable chronic asthma).

• Have been treated with the following therapies:

• Monoclonal antibody for less than 5 half-lives prior to beginning studytreatment.

• Received prior treatment with any oral Janus kinase (JAK) inhibitor.

• Received any parenteral corticosteroids administered by intramuscular orintravenous (IV) injection within 2 weeks prior to study entry or within 6weeks prior to planned initiation of study drug or are anticipated to requireparenteral injection of corticosteroids during the study.

• Have had an intra-articular corticosteroid injection within 2 weeks prior to studyentry or within 6 weeks prior to planned initiation of study drug.

• Have high blood pressure characterized by a repeated systolic or diastolic bloodpressure >95th percentile based on age, sex and height.

• Have had major surgery within the past eight weeks or are planning major surgeryduring the study.

• Have experienced any of the following within 12 weeks of screening: venousthromboembolic event (VTE), myocardial infarction (MI), unstable ischemic heartdisease, stroke, or New York Heart Association Stage III/IV heart failure.

• Have a history of VTE or are considered at high risk of VTE as deemed by theinvestigator.

• Have a history or presence of cardiovascular, respiratory, hepatic, chronic liverdisease gastrointestinal, endocrine, hematological, neurological,lymphoproliferative disease or neuropsychiatric disorders or any other seriousand/or unstable illness.

• Have a current or recent clinically serious viral, bacterial, fungal, or parasiticinfection including herpes zoster (shingles or chicken pox), tuberculosis.

• Have specific laboratory abnormalities.

• Have received certain treatments that are contraindicated.

• Pregnant or breastfeeding.