Mease et al. showed that guselkumab provided significantly higher rates of clinical improvement and significant inhibition of structural damage progression versus PBO, with no new safety signals, at Week 24 in biologic-naïve participants with active and erosive PsA. Mease et al. report primary efficacy and safety results for the double-blind PBO-controlled phase (Weeks 0-24) of the 3-year APEX study.

Marzo-Ortega et al. report that dactylitis and enthesitis are associated with a greater disease burden and worse prognosis, highlighting the importance for physicians to identify these conditions and provide adequate treatment. Authors evaluated guselkumab’s efficacy on dactylitis resolution (DR) and enthesitis resolution (ER), and their impact on subsequent disease control, in patients with active PsA and prior inadequate response to tumour necrosis factor inhibitors (TNFi-IR).

In this first global clinical study of a nanobody in inflammatory arthritis, sonelokimab, an
IL-17A- and IL-17F-inhibiting nanobody demonstrated strong efficacy across multiple domains including high-hurdle composite joint and skin responses. McInnes et al. reported on the Phase 2, randomized, double-blind, PBO-controlled ARGO trial which evaluated the efficacy and safety of sonelokimab in patients with active PsA.

September 2025

Danese et al. showed that patients who achieved disease clearance 8 weeks after ustekinumab induction were more likely to be in long-term clinical, symptomatic and quality of life remission with ustekinumab maintenance treatment than patients who did not. Authors evaluated disease clearance in the Phase 3 UNIFI program and its association with long-term outcomes.

Wang et al. validated the effectiveness and safety of UPA in this real-world study of Chinese PsA patients. UPA demonstrated comparable effectiveness to secukinumab (SEC) in psoriatic lesion improvement while showing comparable joint symptom relief compared with adalimumab (ADA), coupled with a favourable safety profile.

Treatment with risankizumab provides durable improvement in the signs and symptoms of PsA across all the GRAPPA disease domains and related conditions. This post hoc analysis by Coates et al. aimed to assess the efficacy of long-term treatment with risankizumab across the updated GRAPPA domains and key related conditions of PsA.

August 2025

Results from the Phase 3 GRAVTI study by Hart et al. showed that SC induction followed by SC maintenance treatment with guselkumab resulted in superior clinical and endoscopic improvements in participants with moderately to severely active CD through 48 weeks compared with placebo. Hart et al. evaluated efficacy and safety of guselkumab SC induction followed by SC maintenance in participants with moderately to severely active CD in a    treat-through design.

This study by Sobotkova et al. confirmed the similar efficacy and overall safety of biological treatment for psoriasis in older and younger adult patients. Authors compared a large cohort of older adults during the first year of biological treatment for psoriasis to younger adult patients with similar characteristics to advance knowledge about the biologic treatment of psoriasis in older patients.

Baraliakos et al. compared real-world effectiveness of upadacitinib, TNF inhibitors, or IL-17 inhibitors following inadequate response to an initial TNF inhibitor in patients with axSpA. Upadacitinib was associated with greater reductions in pain and fewer affected joints compared with switching to a second TNF inhibitor or IL-17 inhibitor.

UPA has shown effectiveness in treating IMIDs like RA, axSpA, PsA, CD, and UC. Chai et al. evaluated evidence from a synthesis of RCTs and provided insights that may guide clinical decision-making and improve treatment outcomes for IMIDs. UPA effectively alleviated symptoms, reduced disease activity, and showed notable benefits in improving quality of life.