A Study to Evaluate Safety and Effectiveness of Cendakimab (CC-93538) in Participants With Moderate to Severe Atopic Dermatitis

Inclusion Criteria

Participants must satisfy the following criteria to be enrolled in the study:

• Participant must be ≥ 18 years and ≤ 75 years of age and have a body weight of ≥ 40 kg (88.2 lb) at the time of signing the informed consent form (ICF).
• Participant has chronic atopic dermatitis (AD) as defined by Hanifin and Rajka that has been present for ≥ 1 year prior to the baseline visit (Day 1).
• Participant has moderate to severe, active, and symptomatic AD defined by meeting all of the following criteria on the day of the baseline visit (Day 1):
• Body Surface Area (BSA) ≥ 10%, and
• EASI score ≥ 16, and
• vIGA-AD ≥ 3, and
• Pruritus Numeric Rating Scale (NRS) severity score ≥ 4.
• Participant must have a documented history of inadequate response to treatment with topical medications for at least 4 weeks, unless topical treatments are otherwise medically inadvisable or has required systemic therapy for control of disease.
• Participant must be willing to apply a stable dose of topical emollient (eg, over-the-counter moisturizer, non-medicated emollient, etc.) twice daily for ≥ 7 days prior to the Baseline visit and continue application throughout the study.
• Participant must commit to avoid prolonged exposure to the sun and not to use tanning booths, sun lamps or other ultraviolet light sources during the study.
• Participants currently receiving concomitant medications for any reason other than AD, such as inhaled corticosteroids, leukotriene receptor antagonists (eg, montelukast), or mast cell stabilizers (eg, cromolyn sodium) for asthma, must be on a stable regimen, which is defined as not starting a new drug, changing, or stopping dosage within 7 days or 5 half-lives (whichever is longer) prior to Day 1 and through the treatment duration of the study.
• Female participants of childbearing potential must agree to practice a highly effective method of contraception.

Exclusion Criteria

• The presence of any of the following will exclude a participant from enrollment: Evidence of an active and/or concurrent inflammatory skin condition (eg, seborrheic dermatitis, psoriasis, acute allergic contact dermatitis, etc.) that would interfere with the Investigator or participant-driven evaluations of AD.
• Evidence of acute AD flare between the Screening and Baseline/ Randomization (eg, doubling of the EASI score between Screening and Baseline).
• Use of topical treatments that could affect the assessment of AD (eg, corticosteroids, calcineurin inhibitors, tars, antibiotic creams, topical antihistamines) within 7 days of the Day 1 visit.
• Received phototherapy narrowband UVB (NB-UVB) or broad band phototherapy within 4 weeks prior to the Baseline visit.
• Evidence of immunosuppression, participant is receiving, or has received systemic immunosuppressive or immunomodulating drugs (eg, azathioprine, cyclosporine, systemic corticosteroids, interferon gamma (IFN-γ), Janus kinase inhibitors, methotrexate, mycophenolate-mofetil, etc.) within 4 weeks prior to the Baseline visit.
• Treatment with immunomodulatory biologics
• Concurrent treatment with another IP
• Received a live attenuated vaccine within 1 month prior to the first Screening Visit or anticipates the need to be vaccinated with a live attenuated vaccine during the study.
• Active parasitic/helminthic infection or a suspected parasitic/helminthic infection.
• Ongoing infection
• A history of idiopathic anaphylaxis or a major immunologic reaction (such as anaphylactic reaction, anaphylactoid reaction, or serum sickness) to an immunoglobulin G (IgG) containing agent. A known hypersensitivity to any ingredient in the investigational product (IP) is also exclusionary.