PT - JOURNAL ARTICLE AU - Katrina Abuabara AU - Jonathan I Silverberg AU - Eric L Simpson AU - Amy S Paller AU - Lawrence F. Eichenfield AU - Robert Bissonnette AU - James Krueger AU - John E. Harris AU - Laura Dalfonso AU - Stephanie E Watkins AU - Julie M Crawford AU - D Thaçi AU - Emma Guttman-Yassky TI - International observational atopic dermatitis cohort to follow natural history and treatment course: TARGET-DERM AD study design and rationale AID - 10.1136/bmjopen-2020-039928 DP - 2020 Nov 01 TA - BMJ Open PG - e039928 VI - 10 IP - 11 4099 - http://bmjopen.bmj.com/content/10/11/e039928.short 4100 - http://bmjopen.bmj.com/content/10/11/e039928.full SO - BMJ Open2020 Nov 01; 10 AB - Introduction As new topical and systemic treatments become available for atopic dermatitis (AD), there is a need to understand how treatments are being used in routine clinical practice, their comparative effectiveness and their long-term safety in diverse clinical settings.Methods and analysis The TARGET-DERM AD cohort is a longitudinal, observational study of patients with AD of all ages, designed to provide practical information on long-term effectiveness and safety unobtainable in traditional registration trials. Patients with physician-diagnosed AD receiving prescription treatment (topical or systemic) will be enrolled at academic and community clinical centres. Up to 3 years of retrospective medical records, 5 years of prospective medical records, and optional biological samples and patient-reported outcomes will be collected. The primary aims include characterisation of AD treatment regimens, evaluation of response to therapy, and description of adverse events.Ethics and dissemination TARGET-DERM has been approved by a central IRB (Copernicus Group IRB, 5000 Centregreen Way Suite 200, Cary, North Carolina 27513) as well as local and institutional IRBs. No additional Ethics Committee reviews. Results will be reviewed by a publications committee and submitted to peer-reviewed journals.Trial registration number NCT03661866, pre-results.