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).

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.

This study by Mortato et al. enhanced the limited safety data on guselkumab in patients with moderate-to-severe plaque psoriasis who have clinically relevant infectious and oncological comorbidities as well as concomitant heart disease. Authors assessed clinical outcomes and safety of guselkumab in a large cohort of patients with concomitant chronic infection, cancer or heart disease over a long follow-up period, addressing critical gaps in clinical evidence.

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.

In this nationwide observational study, ixekuzumab was mainly used in patients with axSpA and PsA who had previously failed multiple b/tsDMARDs, including other IL-17 inhibitors. Although prior IL-17 treatment was associated with increased risk of withdrawal in both groups, the relatively high retention rates and improvements in all disease outcomes suggest ixekizumab as a viable option for challenging patients with multiple b/tsDMARD failures.

This descriptive analysis indicates a long-term safety profile of UPA consistent with previous reports, further supporting long-term treatment of chronic diseases with UPA. Burmester at al. characterized the safety profile of UPA across multiple approved indications and offer insights into its long-term use to help inform clinical decision-making.

This study by Lee et al. is the first to evaluate the association between adalimumab dosing intervals and uveitis recurrence in patients with AS. Authors investigated whether extending the dosing interval of adalimumab influences the recurrence of uveitis in AS patients with a history of AU who are on adalimumab therapy.

In patients with UC and refractory spondyloarthritis (SpA)—many of whom had previously failed multiple biologic therapies—TOF demonstrated effectiveness, particularly in those with peripheral SpA. Macaluso et al. assessed the effectiveness of TOF in UC-associated SpA. Articular responses were evaluated using rheumatologic scores.