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

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.