Purpose: Real-world treatment patterns among psoriasis patients with and without psoriatic arthritis (PsA) newly initiating treatment with a biologic or apremilast were assessed.
Patients and methods: MarketScan claims data from adults with psoriasis and ?1 new prescription for secukinumab, adalimumab, ustekinumab, etanercept, or apremilast from January 1, 2015, to August 31, 2018, were assessed for adherence, switching, and combination therapy by index medication and PsA diagnosis.
Results: At treatment initiation, 22.0%-45.7% of patients had PsA. Over 24 months, discontinuation rates were high (34.4%-54.6%) overall and higher in patients with versus without PsA (all P<0.05 except secukinumab). Adherence was poor (16.8%-34.8%); switching and combination therapy were common.
Conclusion: Treatment patterns varied, with better outcomes in PsA patients receiving anti-tumor necrosis factor versus anti-IL17/IL12/23 agents.