FDA Expands Guselkumab Label in PsA
Phase 3b APEX findings support the addition of structural joint damage inhibition data to the prescribing information.
By
Kathryn Wighton
May 29, 2026
Clinical Scorecard: FDA Expands Guselkumab Label in PsA
At a Glance
Category Detail
Condition Active Psoriatic Arthritis (PsA)
Key Mechanisms Inhibition of structural joint damage progression
Target Population Adults with active psoriatic arthritis at risk for joint damage
Care Setting Outpatient care for biologic-naïve patients
Key Highlights
Guselkumab approved for inhibition of structural joint damage in PsA Supported by phase 3b APEX trial results 57% reduction in radiographic progression from weeks 24 to 48 for patients switching from placebo No new safety signals identified Only interleukin-23 inhibitor with structural inhibition in US prescribing information
Guideline-Based Recommendations
Diagnosis
Diagnosis of PsA based on clinical criteria and imaging
Management
Guselkumab as a treatment option for patients with inadequate response to standard therapies
Monitoring & Follow-up
Monitor for joint symptoms and progression of structural damage
Risks
Potential for irreversible joint damage if untreated
Patient & Prescribing Data
Biologic-naïve adults with active PsA
Guselkumab shows significant efficacy in reducing joint symptoms and structural damage
Clinical Best Practices
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