Bimekizumab vs. Ustekinumab for Plaque Psoriasis in Children and Adolescents

This study is looking at how well two medications, bimekizumab and ustekinumab, work to treat moderate to severe plaque psoriasis in children and adolescents aged 6 to less than 18 years. Plaque psoriasis is a skin condition that causes red, scaly patches. Participants will receive either bimekizumab, ustekinumab, or a placebo (an inactive substance) through injections under the skin. Researchers want to see if bimekizumab is more effective than ustekinumab in clearing up psoriasis. Success will be measured by how much the psoriasis improves by Week 16, specifically looking at the Psoriasis Area Severity Index (PASI90) and the Investigator's Global Assessment (IGA) scores. The study aims to enroll 168 participants.

Study design
This is an interventional study comparing bimekizumab to ustekinumab and a placebo. It plans to enroll 168 participants.
What's involved
Not specified in the trial record.
Compensation
Not stated in the trial record.
Follow-up
The primary outcomes are measured at Week 16.

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NCT06425549

A Study to Evaluate the Efficacy and Safety of Bimekizumab Compared to Ustekinumab in Children and Adolescents From 6 Years to Less Than 18 Years of Age With Moderate to Severe Plaque Psoriasis

Active, Not Recruiting
PHASE3Ages 6–17InterventionalTreatment
UCB Biopharma SRL
~176 participants
Updated 2026-08-19 on ClinicalTrials.gov
What's tested:bimekizumabustekinumabplacebo

At a glance

Recruiting sites
0 of 42 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Psoriasis Area Severity Index 90 (PASI90) response at Week 16
Measured over Week 16
+1 more outcome measured
Moderate to Severe Plaque Psoriasis
42 sites across 13 states
Germany10
Poland8
Italy4
California3
Hungary3
Japan3
Spain3
Texas2
  • UCB Cares · STUDY_DIRECTOR · 001 844 599 2273

This trial hasn't published a contact. View it on ClinicalTrials.gov

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Eligibility criteria

Inclusion

Study participant must be 6 to \<18 years of age, inclusive, at the time of signing the informed consent/assent according to local regulation
Study participant has had a diagnosis of moderate to severe plaque psoriasis (PSO) for at least 3 months prior to the Screening Visit
Study participant meets the following at both the Screening and Baseline Visits:
Study participant is a candidate for systemic PSO therapy and/or photo/chemotherapy and for treatment with ustekinumab per labeling
Study participant has body weight ≥15 kg and body mass index for age percentile of ≥5 at Screening

Exclusion

Primary failure (no response within 12 weeks) to 1 or more interleukin-17 (IL-17) biologic response modifiers (eg, brodalumab, ixekizumab, secukinumab) OR more than 1 biologic response modifier other than an IL-17
Study participant has a presence of guttate, inverse, pustular, or erythrodermic PSO or other dermatological condition that may impact the clinical assessment of PSO
Study participant has a history of inflammatory bowel disease (IBD) or symptoms suggestive of IBD
History of active tuberculosis unless successfully treated, latent TB unless prophylactically treated
Study participant has an active infection or history of infections (such as serious infection, chronic infections, opportunistic infections, unusually severe infections)
Study participant has previously received bimekizumab
Study participant has previously received ustekinumab
Study participant has received drugs outside the specified timeframes relative to the Baseline Visit or receives prohibited concomitant treatments
Study participant has the presence of active suicidal ideation, or positive suicide behavior
Study participant diagnosed with severe depression in the past 6 months (prior to Screening) should be excluded
Study participant has a history of psychiatric inpatient hospitalization within the past year before enrolling into the study
  • Psoriasis Area Severity Index 90 (PASI90) response at Week 16Week 16

    The PASI90 response assessments are based on at least 90% improvement in the PASI score from Baseline. This is a scoring system that averages the redness, thickness, and scaliness of the psoriatic lesions (on a 0-4 scale), and weights the resulting score by the area of skin involved. Body divided into 4 areas: head, arms, trunk to groin, and legs to top of buttocks. Assignment of an average score for the redness, thickness, and scaling for each of the 4 body areas with a score of 0 (clear) to 4 (very marked). Determining the percentage of skin covered with PSO for each of the body areas and converting to a 0 to 6 scale. Final PASI= average redness, thickness, and scaliness of the psoriatic skin lesions, multiplied by the involved psoriasis area score of the respective section, and weighted by the percentage of the person's affected skin for the respective section. The minimum possible PASI score is 0= no disease, the maximum score is 72= maximal disease.

  • Investigator´s Global Assessment (IGA) 0/1 response at Week 16Week 16

    The Investigator's Global Assessment (IGA) measures the overall psoriasis severity following a 5-point scale (0-4), where scale 0= clear, no signs of psoriasis; presence of post-inflammatory hyperpigmentation, scale 1= almost clear, no thickening; normal to pink coloration; no to minimal focal scaling, scale 2= mild, just detectable to mild thickening; pink to light red coloration; predominately fine scaling, 3= moderate, clearly distinguishable to moderate thickening; dull to bright red; moderate scaling and 4= severe, severe thickening with hard edges; bright to deep dark red coloration; severe/coarse scaling covering almost all or all lesions. IGA response (Clear or Almost Clear) is defined as clear \[0\] or almost clear \[1\] with at least a two-category improvement from Baseline.