Single-Centre Real-World Study on Drug Survival and Effectiveness of Brodalumab for Treatment of Psoriasis and Psoriatic Arthritis

Abstract Background Clinical trials have established the efficacy of brodalumab in treatment of psoriasis and psoriatic arthritis. Real-world evidence is needed to fully evaluate the drug. Objective Here we investigate drug survival and clinical effectiveness of brodalumab in patients with psoriasis and psoriatic arthritis in a real-world setting. Methods This was a retrospective single-centre study enrolling patients receiving brodalumab for psoriasis at the Department of Dermatology, Aarhus University Hospital, Denmark. The primary endpoints were drug survival, reasons for discontinuation, percentage of patients achieving a Psoriasis Area and Severity Index (PASI) ≤ 2 and clinical effectiveness against psoriatic arthritis. Results Eighty-three patients were included (mean age 49.2 ± 17.4 years, 59.0% male, 9.6% bio-naïve, mean baseline PASI 10.9 ± 6.9). Twenty-seven patients discontinued treatment primarily due to ineffectiveness and adverse events (AEs). Kaplan–Meier-estimated 1-year drug survival was 65.7%. An absolute Psoriasis Area and Severity Index (PASI) ≤ 2 was achieved by 68.2% of patients at end of follow-up, by 70.0% at weeks 12–17 and by 76.2% after 40–60 weeks of treatment. Neither drug survival nor PASI ≤ 2 was associated with baseline PASI ≥ 10, body mass index ≥ 30, previous treatment with > 2 biologics or other IL-17 inhibitors in particular (P > 0.05). Psoriatic arthritis remission or partial remission was achieved by 10 out of 18 patients with psoriatic arthritis; treatment failure was reported in 5 patients. Conclusions Brodalumab was effective against psoriasis and psoriatic arthritis in a real-world setting. The drug survival was lower than reported in other real-world settings.