CI

At a glance

ClinicalIndex Comparison Record
Phase 3Completed· 741 enrolled / 741 target
Drug / intervention
Guselkumab +1 moredrug
Likely dose
Guselkumab 100 mgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT03158285
NCT03158285Phase 3CompletedMonitor (6.9/mo)Completion was 88mo ago

A Phase 3, Multicenter, Randomized, Double-blind, Placebo-controlled Study Evaluating the Efficacy and Safety of Guselkumab Administered Subcutaneously in Subjects With Active Psoriatic Arthritis

Janssen Research & Development, LLC·interventional·Posted May 18, 2017·Updated Jun 2, 2026

In Brief

A Phase 3 clinical trial evaluating Guselkumab and Placebo for Arthritis, Psoriatic. Completed, enrolled 741 participants across 138 sites in 13 countries.

Signals

Enrolling slower than its timeline implies

Detailed Summary

The primary purpose of this study is to evaluate the efficacy of guselkumab treatment in participants with active psoriatic arthritis (PsA) by assessing the reduction in signs and symptoms of PsA.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesBulgaria, Czechia, Estonia, Latvia, Lithuania, Malaysia, Poland, Russia, Spain, Taiwan, Turkey (Türkiye), Ukraine, United States
Collaborators--

Timeline

Phase 3CompletedFinished
201820192020202120222023202420252026
First PostedMay 18, 2017
Enrollment StartJul 12, 2017
Primary CompletionFeb 25, 2019
Study CompletionNov 10, 2020
TodayJul 2, 2026
Enrollment to primary: 1.6 yearsPosted 9.1 years ago

Arms & Interventions

Group 1: Guselkumabexperimental

Participants will receive subcutaneous (SC) guselkumab 100 milligram (mg) once every 4 weeks (q4w) from Week 0 through Week 100.

Drug: Guselkumab
Group 2: Guselkumab and Placeboexperimental

Participants will receive SC guselkumab 100 mg at Weeks 0 and 4 then once every 8 weeks (q8w) (Weeks 12, 20, 28, 36, 44, 52, 60, 68, 76, 84, 92, and 100) and placebo injections at other visits (Weeks 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, and 96) to maintain the blind.

Drug: GuselkumabDrug: Placebo
Group 3: Placebo Followed by Guselkumabexperimental

Participants will receive SC placebo q4w from Week 0 to Week 20 and will cross over at Week 24 to receive SC guselkumab 100 mg q4w from Week 24 through Week 100.

Drug: GuselkumabDrug: Placebo

Interventions

Guselkumabdrug

Participants will receive 100 mg of guselkumab as a sterile liquid for SC injection.

Placebodrug

Participants will receive matching placebo as SC injection.