ABSTRACT
INTRODUCTION: The treatment of severe atopic dermatitis (AD) includes cyclosporine and recently approved biologics and small molecules. Among these, upadacitinib is a selective inhibitor of Janus kinase 1, approved for the treatment of severe AD in adolescents/adults. Upadacitinib has shown efficacy and safety in several phase 3 clinical trials, but data on real-life patients are still lacking. METHODS: We conducted a retrospective real-life observational study to evaluate the effectiveness and safety of upadacitinib up to week 16 in a cohort of both bio-naïve and bio-experienced patients. This study was carried out by analyzing the AD database records of an Italian referral hospital. Thirty-eight patients were included in this study, and 35 completed 16 weeks of treatment. RESULTS: At week 16, out of 35 patients, the percentages of Eczema Area and Severity Index (EASI) 50, EASI 75, EASI 90 and EASI 100 responses were 94.29, 91.43, 74.29, and 60%, respectively. A decrease of at least 4 points from baseline of itch-NRS was reported by 94.74 and 91.43% of patients at weeks 8 and 16. Regarding the safety of upadacitinib, 26.32% of patients experienced at least one adverse event (AE), and a total of 13 AEs were recorded, including blood test abnormalities and papulopustular acne. None of our patients interrupted the drug because of an AE. CONCLUSIONS: We observed higher rates of EASI75/EASI90/EASI100 responses at week 16, compared with data from clinical trials. The safety profile of upadacitinib was favorable, as no AEs leading to discontinuation were experienced by our patients up to week 16.