Subcutaneous Guselkumab for Psoriasis
(PROTOSTAR Trial)

Recruiting in Palo Alto (17 mi)

+46 other locations

Age: < 18

Sex: Any

Travel: May Be Covered

Time Reimbursement: Varies

Trial Phase: Phase 3

Waitlist Available

Sponsor: Janssen Research & Development, LLC

Pivotal Trial (Near Approval)

Prior Safety Data

Approved in 2 Jurisdictions

Trial Summary

What is the purpose of this trial?This trial is testing a medication called guselkumab to see if it is safe and effective for children and teenagers with chronic plaque psoriasis. The medication aims to reduce inflammation and slow down the rapid growth of skin cells. Guselkumab is the first IL-23 specific inhibitor to be approved for the treatment of plaque psoriasis and has shown excellent safety and efficacy in previous studies.

Eligibility Criteria

This trial is for children and teens aged 6 to less than 18 with chronic plaque psoriasis. They must have had the condition for at least 6 months, show certain levels of severity, be up-to-date on vaccinations or immune to varicella and MMR, and could benefit from etanercept therapy. Those with a history of lymphoproliferative disease, previous guselkumab or etanercept use, chronic infections, nonplaque psoriasis types, or drug-induced psoriasis cannot join.

Inclusion Criteria

Be otherwise healthy on the basis of physical examination, medical history, and vital signs performed at screening. Any abnormalities, must be consistent with the underlying illness in the study population and this determination must be recorded in the participant's source documents and initialed by the investigator

I am immune to varicella and MMR through vaccination, past infection, or positive antibody tests.

I am eligible for light therapy or systemic treatment for plaque psoriasis.

+3 more

Exclusion Criteria

I have a history of chronic or recurrent infections.

My psoriasis is not the common plaque type.

I have been treated with guselkumab or etanercept before.

+2 more

Participant Groups

The study tests the effectiveness and safety of Guselkumab administered under the skin in young patients with plaque psoriasis compared to Etanercept (another treatment) and a placebo. The goal is to see how well Guselkumab works in reducing symptoms of this skin condition.

4Treatment groups

Experimental Treatment

Active Control

Placebo Group

Group I: Part 2: GuselkumabExperimental Treatment1 Intervention

Participants will receive a weight-based dose of open-label guselkumab SC at Weeks 0, 4 and q8w thereafter through Week 52. Participants who are eligible and willing to continue guselkumab treatment, may enter the LTE of the study and continue to receive guselkumab at Week 52 and q8w thereafter.

Group II: Part 1 Group 1: GuselkumabExperimental Treatment2 Interventions

Participants in Part 1a (age greater than or equal to (\>=) 12 - less than (\<) 18 years) will receive a weight-based dose of guselkumab subcutaneously (SC) at Weeks 0, 4, and 12. Participants who are PASI 90 responders at Week 16 will not receive any additional doses of guselkumab until they lose \>=50% of their Week 16 PASI response, then they receive 1 dose guselkumab, followed by a dose 4 weeks later, and every 8 weeks (q8w) thereafter through Week 52. Participants who are PASI 90 non-responders at Week 16 will receive a placebo injection at Week 16 and continue to receive guselkumab q8w from Week 20 through Week 52. Participants who are eligible and willing to continue guselkumab may enter the Long Term Extension (LTE) Phase of the study. Part 1b (age \>= 6 - \<12 years) will follow the same dosing and commence after Part 1a data review.

Group III: Part 1 Group 3: EtanerceptActive Control2 Interventions

Participants in Part 1a (age \>= 12 - \<18 years) will receive weight-based etanercept dose up to 50 milligram SC weekly through Week 15. Participants who elect to continue in the study will receive a weight-based guselkumab dose at Weeks 20 and 24, followed by q8w dosing thereafter through Week 48. Participants who are eligible and willing to continue guselkumab treatment, may enter the LTE phase of the study. Part 1b (age \>= 6 - \<12 years) will follow the same dosing and commence after Part 1a data review.

Group IV: Part 1 Group 2: Placebo for GuselkumabPlacebo Group2 Interventions

Participants in Part 1a (age \>= 12 - \<18 years) will receive placebo for guselkumab administered SC at Weeks 0, 4, and 12. Participants who are PASI 90 responders at Week 16 will not receive any additional doses of study intervention until they lose \>=50% of their Week 16 PASI response, at which time they will receive a weight-based guselkumab SC dose, followed by a dose 4 weeks later, and q8w thereafter through Week 52. Participants who are PASI 90 non-responders at Week 16 will receive a weight-based guselkumab dose at Weeks 16 and 20, followed by q8w dosing thereafter through Week 52. Participants who are eligible and willing to continue guselkumab treatment, may enter the LTE phase of the study. Part 1b (age \>= 6 - \<12 years) will follow the same dosing and commence after Part 1a data review.

Guselkumab is already approved in United States, European Union for the following indications:

🇺🇸 Approved in United States as Tremfya for: