Long-Term Persistence with Guselkumab: A 5-Year Multicenter Retrospective Study across 14 Dermatology Centers in...

Psoriasis is a chronic systemic inflammatory disease that requires long-term treatment strategies to maintain sustained disease control. Treatment persistence is an important real-world indicator of therapeutic effectiveness and tolerability. Guselkumab, an IL-23 inhibitor, has shown favorable persistence in several studies, but extended long-term data remain limited.

To assess 3- and 5-year drug survival rates of guselkumab in patients with moderate-to-severe plaque psoriasis and to examine the relationship between persistence and clinical variables such as PASI, BMI, prior biologic exposure, and involvement of difficult-to-treat areas.

This was a multicenter retrospective observational study conducted across 14 dermatology centers in Italy. Adult patients with moderate-to-severe plaque psoriasis who started guselkumab were included. Data collected included demographics, clinical history, disease severity, comorbidities, and treatment details. Drug survival was analyzed using Kaplan-Meier curves and Cox proportional hazards models.

A total of 247 patients were included. At three years, 80.2% of patients remained on guselkumab, and at five years, 72.8% continued treatment. Persistence was not significantly influenced by BMI, PASI, or age. However, prior biologics exposure was associated with a higher risk of discontinuation (hazard ratio (HR): 1.84; P=0.0208), especially in those previously treated with IL-17 inhibitors (HR:2.14; P=0.0150). The involvement of difficult-to-treat areas did not significantly affect persistence, although a trend toward reduced discontinuation was observed in patients with genital involvement (P=0.0539).

Guselkumab demonstrated high long-term persistence in real-world clinical practice. Drug survival remained consistently high across various subgroups, with prior IL-17 inhibitor exposure being the main predictor of decreased persistence.