Maintenance of Response Through up to 4 Years of Continuous Guselkumab Treatment of Psoriasis in the VOYAGE 2 Phase 3 Study.

Background: Guselkumab effectively treats moderate-to-severe psoriasis.
Objectives: Results of continuous guselkumab treatment through 4 years from VOYAGE 2 are presented.
Methods: At baseline, 992 patients were randomized to receive guselkumab 100 mg every 8 weeks, placebo, or adalimumab 40 mg every 2 weeks. Placebo-treated patients crossed over to guselkumab at week 16. Weeks 28-76 incorporated randomized withdrawal, and all patients received open-label guselkumab through to week 204. Efficacy was analyzed using pre-specified treatment failure rules (patients were considered nonresponders after discontinuing due to lack of efficacy, worsening of psoriasis, or use of a prohibited treatment). There was no missing data imputation after treatment failure rules. Safety was analyzed through 4 years.
Results: The proportions of guselkumab-treated patients who achieved and maintained designated clinical responses at weeks 100 and 204, respectively, were as follows: at least a 75% improvement in Psoriasis Area and Severity Index from baseline (PASI 75): 94.1% and 92.3%; PASI 90: 79.1% and 79.7%; PASI 100: 48.4% and 51.0%; Investigator's Global Assessment (IGA) score of 0/1: 83.1% and 81.9%; IGA score of 0: 52.7% and 52.7%; Dermatology Life Quality Index score of 0/1: 70.2% and 69.1%; Psoriasis Symptoms and Signs Diary (PSSD) symptom score of 0: 35.7% and 39.7%; PSSD sign score of 0: 22.0% and 27.2%; ≥ 5% improvement in Short Form-36 (SF-36) physical component score: 48.8% and 45.0%; ≥ 5% improvement in SF-36 mental component score: 45.1% and 43.2%; Hospital Anxiety and Depression Score (HADS)-anxiety score ≥ 8: 22.9% and 21.7%; and HADS-depression score ≥ 8: 16.6% and 21.0%. Similar findings were reported for the adalimumab → guselkumab group. No new safety signals were identified.
Conclusions: High efficacy levels were maintained from week 100 through to week 204 with continuous guselkumab treatment, across multiple endpoints, in VOYAGE 2. Guselkumab was well tolerated.
Clinical Trial Registration: NCT02207244.