Use of advanced systemic therapy in patients with moderate-to-severe atopic dermatitis in the TARGET-DERM AD Registry

Background: Moderate-to-severe atopic dermatitis (AD) significantly impacts quality of life. Advanced systemic therapeutics (AST) represent a new generation of medications targeting AD pathogenesis, but many who may benefit from these medications are AST-naïve. We compared patients in the United States who had started AST with those who had not started AST to evaluate associated characteristics.

Methods: TARGET-DERM AD, (NCT03661866, "A Longitudinal Observational Study of Patients Undergoing Therapy for IMISC (TARGET-DERM)" launched in 2019, is an ongoing, longitudinal, observational study of patients managed at 37 United States sites. Patients were aged 12 years and above, had moderate-to-severe AD based on validated Investigator Global Assessment (vIGA) at enrollment, at least one follow-up visit post-enrollment, and treatment with any of the following: a topical/systemic corticosteroid, immunomodulator, or phototherapy. AST included dupilumab and upadacitinib. Variables of interest gathered at enrollment included demographics, vIGA and Body Surface Area (BSA), patient-reported outcomes, and all recorded therapeutics.

Results: Of 3,076 patients, 436 qualified for inclusion, 52 were AST-treated adolescents and 141 AST-treated adults. Both groups had increased likelihood of AST initiation if they had private insurance and higher BSA, vIGAxBSA, or Patient-Oriented SCORing Atopic Dermatitis scores. Adults were more likely to start AST based on minority/ethnicity, more severe vIGA, higher patient-reported outcomes, or if treated at a community clinic. Substantial numbers of adolescent and adult patients (47 and 58%, respectively) with severe disease were AST-naïve.

Conclusions: Disease severity and patient access to AST are major factors driving AST initiation. However, some patients are undertreated. This analysis supports AD patient advocacy for those inadequately managed with conventional therapies. Further investigations are necessary to delineate AST initiation barriers and relevant outcomes.