Observational StudyMechanisms of Increased Disease Severity in AD Patients With the IL-4Ra R576 Polymorphism

Inclusion Criteria:

1. Male or female participants ≥6 to 65 yrs of age
2. Meet AD Standard Diagnostic Criteria

Exclusion Criteria:

1. Enrollment in another clinical trial
2. Hypersensitivity to an agent used for the skin decolonization protocol
3. Use within 4 weeks of systemic treatment with immunosuppressive/immunomodulating drugs (corticosteroids, cyclosporine, mycophenolate, JAK inhibitors, azathioprine, methotrexate)
4. Phototherapy for AD within 4 weeks
5. Treatment with biologics (dupilumab, omalizumab, benralizumab, etc) within sixteen weeks
6. Use of topical steroids, topical calcineurin inhibitors or crisaborale within 7 days
7. Bleach baths within 7 days of the first Visit
8. Use of oral or topical antibiotics within 21 days of the beginning of the study
9. Asthmatics receiving more than 500 μg per day of inhaled corticosteroids
10. History of (HIV, hepatitis B, hepatitis C, tuberculosis malignancy
11. Skin comorbidities that may interfere with assessments: psoriasis, cutaneous T Cell lymphoma,,
12. Severe ongoing medical illnesses e.g. cardiovascular, renal disease, autoimmune disease.
13. Febrile illness at time of visits
14. Suspected immune deficiency or family history of primary immunodeficiency