Impact of Enthesitis on Psoriatic Arthritis Patient-Reported Outcomes and Physician Satisfaction with Treatment: Data from a Multinational Patient and Physician Survey.

INTRODUCTION: Enthesitis is a core outcome domain assessed in psoriatic arthritis (PsA) clinical trials. Limited evidence describes the impact of enthesitis on patient-reported outcomes (PROs) and physician satisfaction with current treatment options. The objective of this analysis is to characterize the impact of enthesitis on PROs and physician satisfaction with currently available treatment in clinical practice settings.

METHODS: Cross-sectional survey of rheumatologists, dermatologists, and their consulting patients with PsA in Australia, Canada, European Union (EU5), and the USA conducted in 2018. Physicians assessed current presence and severity of enthesitis, overall disease severity, other symptoms experienced, and their satisfaction with the current treatment. PsA participant self-reported data included current pain level, EQ5D, Psoriatic Arthritis Impact of Disease (PsAID12), Health Assessment Questionnaire Disability Index (HAQ-DI), and Work Productivity and Activity Impairment Index (WPAI-SHP). Bivariate descriptive analyses were conducted to describe features and outcomes in participants with and without enthesitis.

RESULTS: Rheumatologists (454) and dermatologists (238) provided information for 3157 participants with PsA. Mean participant age was 49.2 years, and 45.9% were female. Enthesitis was present currently in 6.5% (205) of participants with PsA. Those with enthesitis had worse overall disease severity compared to those without enthesitis (12.2% vs 2.2% severe) and had more extraarticular manifestations, including nail psoriasis, dactylitis, and sacroiliitis. Enthesitis was associated with more pain, worse quality of life (QoL), increased disability, and a negative impact on work. Participants with enthesitis had higher NSAIDs and opioid pain medication use but similar biologic use. Physicians were significantly less satisfied with current PsA treatment in participants with enthesitis versus without enthesitis.

CONCLUSIONS: Participants with psoriatic arthritis with enthesitis experienced significantly higher disease burden than those without enthesitis but were not more likely to receive advanced therapies. Physicians were significantly more dissatisfied with treatment in patients with enthesitis than in those without it.