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Last Updated: 01/07/2026
A Phase 3, Multicenter, Open-label, Basket, LTE Study to Evaluate the Safety of Guselkumab in Pediatric Participants With Crohn's Disease, Ulcerative Colitis, or Juvenile Psoriatic Arthritis
Summary: The purpose of this study is to evaluate long-term safety of subcutaneous guselkumab in pediatric participants with moderately to severely active ulcerative colitis, or moderately to severely active Crohn's disease, or juvenile psoriatic arthritis (jPsA).
A Phase 3, Multicenter, Randomized, Platform Study of p19 Inhibition of the IL-23 Pathway to Establish Efficacy in Pediatric Crohn's Disease
Summary: The purpose of this study is to evaluate the clinical and endoscopic efficacy of guselkumab in pediatric participants with Crohn's Disease (CD) at the end of maintenance therapy (Week 52) among participants who were in clinical response to guselkumab at Week 12.
A Phase 3b, Open-label, Multicenter Study to Evaluate Transmural Healing and Disease Modifying Effect of Guselkumab in Crohn's Disease Patients
Summary: The purpose of this study is to evaluate the efficacy of guselkumab in healing of all layers of the digestive tract (transmural healing) with the help of a score called Magnetic Resonance Index of Activity (MaRIA) based on a scan at Week 48.
A Phase 4, Multicenter, Randomized, Double-blind, Placebo-controlled Study Evaluating the Efficacy and Safety of Guselkumab Administered Subcutaneously in Bio-naive Participants With Active Psoriatic Arthritis Axial Disease
Summary: The purpose of this study is to evaluate the efficacy of guselkumab treatment in participants with active psoriatic arthritis (PsA) axial disease by assessing reduction in axial symptoms and inflammation.
A Phase 3 Multicenter, Open-label Study to Evaluate the Efficacy, Pharmacokinetics, Safety, and Immunogenicity of Subcutaneously Administered Ustekinumab or Guselkumab in Pediatric Participants With Active Juvenile Psoriatic Arthritis (PSUMMIT-Jr)
Summary: The purpose of this study is to evaluate the pharmacokinetics (PK), efficacy, safety and immunogenicity of ustekinumab and guselkumab in active juvenile psoriatic arthritis (jPsA).
A Phase 3 Randomized, Open-label Induction, Double-blind Maintenance, Parallel-group, Multicenter Protocol to Evaluate the Efficacy, Safety, and Pharmacokinetics of Guselkumab in Pediatric Participants With Moderately to Severely Active Ulcerative Colitis
Summary: The purpose of this study is to evaluate the efficacy of guselkumab in pediatric participants with moderately to severely active ulcerative colitis at the end of maintenance therapy among participants who were induction responders.
Efficacy of Guselkumab in the Treatment of Hailey Hailey Disease: An Open-label, Proof of Concept Study
Summary: Hailey-Hailey disease (HHD) is a debilitating genetic skin disorder, affecting mainly body folds with erythema and painful erosions and blisters. Histopathological findings include epidermal hyperplasia, suprabasilar clefting, dyskeratosis and acantholysis of keratinocytes. A final diagnosis of HHD is usually confirmed based on clinical and histopathological findings in line with genetic testing. ...
UPGRADE: Ultrasound and Proteomics for Guselkumab Response Assessment in Crohn's Disease.
Summary: The goal of this observational study is to evaluate the response of guselkumab in adult patients with Crohn's disease (CD) as measured on intestinal ultrasound (IUS), the relative quantities of CD64 in endoscopic tissue biopsies, and the protein signature in the blood of patients with and without therapy response. The main question it aims to answer is: * What is the proportion of ileal Crohn's di...
Biologics and Blistering - Using a Contact Dermatitis Model With Biologic Medications to Study Skin Inflammation Through Suction Blistering
Summary: The purpose of this study is to answer: how do inflammation and anti-inflammatory skin therapies work in the skin? Inflammation is a protective response from the body's immune system to injury, disease, or irritation. It is a process by which your body's white blood cells and the things they make protect you from infection from outside invaders such as bacteria and viruses.
GUselkumab for the Treatment of PsA: Effectiveness Results by Ultrasound
Summary: The purpose of this study is to assess how well guselkumab works in improving symptoms of psoriatic arthritis (an inflammatory disease that affects the joints in participants with psoriasis, a skin condition that causes red, scaly patches) using muscoloskeletal ultrasound (MSUS) in a real-world setting.
Generation of Real-world Evidence of Guselkumab in IBD Evaluating Effectiveness, Early Outcomes and Patient Relevant Aspects
Summary: The purpose of this study is to characterize participants with Crohn's Disease (CD) and Ulcerative Colitis (UC) treated with Guselkumab in a real-world setting, and to assess the clinical effectiveness (how well the treatment works) in the overall population and in different participant subgroups. Furthermore patient-reported outcomes like fatigue, health-related quality of life (HRQoL), sexuality...
A Phase-IV, Multicenter, Non-Comparative, Open-Label Study Evaluating the Safety and Efficacy of Guselkumab Administered Subcutaneously in the Treatment of Indian Patients With Psoriatic Arthritis
Summary: The purpose of this study is to evaluate the safety and how well guselkumab treatment works (efficacy) in participants with psoriatic arthritis (PsA; a chronic, autoimmune form of arthritis that causes joint inflammation) who had inadequate response to standard therapies.
Last Updated: 01/07/2026