Retention and response rates in 14 261 PsA patients starting TNF inhibitor treatment—results from 12 countries in EuroSpA

Abstract Objective To investigate TNF inhibitor (TNFi) retention and response rates in European biologic-naïve patients with PsA. Methods Prospectively collected data on PsA patients in routine care from 12 European registries were pooled. Heterogeneity in baseline characteristics between registries were explored (analysis of variance and pairwise comparison). Retention rates (Kaplan–Meier), clinical remission [28-joint count DAS (DAS28) 14 000 patients with PsA who initiated first TNFi treatment in routine care were in DAS28 remission after 6 months, and three-quarters were still on the drug after 1 year. Considerable heterogeneity in baseline characteristics and outcomes across registries was observed. The feasibility of creating a large European database of PsA patients treated in routine care was demonstrated, offering unique opportunities for research with real-world data.