Journal Club Review: DISCOVER-2 Severe PsA Publication

April 2026

In this journal club review module, Danielle Gatti Palumbo, PharmD, explores a post hoc analysis of a phase 3 clinical trial evaluating the efficacy of Guselkumab in biologic-naive patients with severe psoriatic arthritis (PsA). The discussion breaks down how guselkumab performs across multiple PsA disease domains, including joint involvement, skin and nail disease, enthesitis, dactylitis, and patient-reported outcomes. Psoriatic arthritis is a complex, multi-domain inflammatory condition that significantly impacts quality of life, making effective and durable treatment strategies essential for long-term disease control.

The analysis highlights rapid and sustained improvements with guselkumab, with joint symptom relief seen as early as week 2 and broader disease activity improvements by week 8, maintained through 2 years. Across multiple severity cohorts, patients treated with guselkumab were significantly more likely to achieve and maintain low disease activity compared to placebo, with consistent efficacy across both every-4-week and every-8-week dosing regimens. These findings reinforce the importance of early biologic intervention and support guselkumab as a strong first-line treatment option for patients with severe PsA.

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