Filgotinib for children with polyarticular juvenile idiopathic arthritis
Official title: Multicenter, Open-label Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Efficacy of Filgotinib in Children and Adolescents From 8 Years to Less Than 18 Years of Age With Polyarticular-course Juvenile Idiopathic Arthritis
Run by Alfasigma S.p.A. · NCT07554495 · Data updated 2026-11-12
This study tests whether and how filgotinib works and is tolerated in children and adolescents with active polyarticular JIA over about 18 weeks.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 8 Years to 18 Years |
| Sex | All |
| Enrollment | 65 (estimated) |
| Sponsor | Alfasigma S.p.A. Industry-sponsored |
| Drugs / interventions | methotrexate, filgotinib |
| Locations | 14 sites (Leuven and 13 other locations) |
| Status | Recruiting |
| Started | May 21, 2026 |
| Main results expected | June 2027 |
| Study ends | June 2027 |
| Registry record updated | June 12, 2026 |
| Trial ID | NCT07554495 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Children and adolescents aged 8 to under 18 with moderately to severely active polyarticular JIA not adequately controlled by current therapy.
✕Probably not a fit
Patients whose disease does not respond to filgotinib or who experience intolerable adverse effects may not benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a multicenter Phase 3, open-label, single-arm trial evaluating safety, tolerability, pharmacokinetics, and efficacy of oral filgotinib in pediatric patients aged 8 to under 18 with moderately to severely active polyarticular JIA. Eligible participants may have extended oligoarthritis, RF-positive or RF-negative polyarthritis, psoriatic arthritis, or enthesitis-related arthritis and must have inadequate response to current therapy. The study involves up to 18 weeks of filgotinib treatment and will monitor safety and PK alongside clinical response. It is sponsored by Alfasigma S.p.A. with participating centers in Leuven, Prague, and Paris regions.
Why it matters
Potential benefit: If successful, participants may experience improvement in arthritis symptoms and better disease control with a tolerable safety profile.
How similar studies have gone: While pediatric data for filgotinib are limited, adult and some pediatric JIA studies with JAK inhibitors have shown meaningful improvements in disease activity in similar populations.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Subject and/or parent/legal guardian must be able and willing to comply with the clinical study protocol requirements and must sign and date the ICF and assent (if required per local regulation) as approved by the Independent Ethics Committee / Institutional Review Board, prior to any screening evaluations. * Female or male subject 8 to \<18 years of age, on the date of signing the informed consent and assent (per local regulation) form. * Subject must meet the ILAR classification and have moderately to severely active disease for one of the following categories that is not adequately controlled with his/her current therapy (see Protocol Appendix 1 for disease activity assessment criteria): * Extended oligoarthritis (i.e. affecting a total of more than 4 joints after the first 6 months of disease) * RF-positive polyarthritis * RF-negative polyarthritis * PsA * ERA * Subject with intolerance or a history of inadequate response to at least one of the following medications for the treatment of pJIA, administered for at least 3 months, based on current treatment guidelines: conventional synthetic disease modifying anti rheumatic drugs (csDMARDs; including methotrexate) and/or biologic disease modifying anti-rheumatic drugs (bDMARDs) administered per local label, and/or non steroidal anti-inflammatory drugs for ERA and PsA subtypes. * Female subject of childbearing potential who is sexually active and at risk for pregnancy must agree to use contraception/preventive exposure measures as described in the protocol. Exclusion Criteria: * Subject with a body weight \<15 kg. * Subject with persistent oligoarthritis (i.e. affecting not more than 4 joints throughout the disease course). * Subject with undifferentiated arthritis. * Subject with anterior uveitis (active or uncontrolled) ≤12 weeks prior to baseline. * Subject with systemic JIA. * Subject with any other rheumatic disease, inflammatory, or immunologic disease (e.g. inflammatory bowel disease, hypogammaglobulinemia, or systemic lupus erythematosus). * Subject has any condition or circumstances (including abnormalities in laboratory parameters) that, in the opinion of the investigator, may make a subject unlikely or unable to complete the study or comply with study procedures and requirements. * Subject has an active infection. • Subject with a history of complicated herpes zoster infection (with multi dermatomal, disseminated, ophthalmic, or central nervous system involvement).
Where it's running
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UZ Leuven
Leuven, Belgium Recruiting -
Vseobecna fakultni nemocnice v Praze
Prague, Czechia Recruiting -
Hôpital Bicêtre
Le Kremlin-Bicêtre, France Recruiting -
Charité - Campus Virchow-Klinikum
Berlin, Germany Recruiting -
Hamburger Zentrum fuer Kinder und Jugendrheumatologie
Hamburg, Germany Recruiting -
Pecsi Tudomanyegyetem Klinikai Kozpont
Pécs, Hungary Recruiting
Show 8 more locations
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Istituto Giannina Gaslini-Ospedale Pediatrico IRCCS
Genova, Italy Recruiting -
Centrum Medyczne Hipokrates S C Elzbieta I Grzegorz Grzesk
Bydgoszcz, Poland Recruiting -
MICS Centrum Medyczne Torun
Torun, Poland Recruiting -
ETG JustMed
Warsaw, Poland Recruiting -
Hospital Sant Joan de Deu
Barcelona, Spain Recruiting -
Bristol Royal Hospital for Children
Bristol, United Kingdom Recruiting -
Leicester Royal Infirmary
Leicester, United Kingdom Recruiting -
Nottingham University Hospitals Queen's Medical Centre
Nottingham, United Kingdom Recruiting
Study contacts
- Study coordinator: Medical Information
- Email: medicalinfo@alfasigma.com
- Phone: 00800 7878 1345
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Open-label extension with filgotinib for juvenile idiopathic arthritis
This long-term open-label extension sees if filgotinib stays safe and continues to control symptoms in children aged 8–17 with polyarticular or systemic juvenile idiopathic arthritis who benefited from earlier treatment.
-
Filgotinib for children and teenagers with ulcerative colitis
This will test whether filgotinib helps children and teenagers (8 to under 18 years) with moderate-to-severe ulcerative colitis control their symptoms and reduce disease activity.
-
Evaluating the safety and effectiveness of Jyseleca tablet in Korean patients
This study is testing how safe and effective the Jyseleca tablet is for Korean patients with rheumatoid arthritis and ulcerative colitis who haven't found relief with other treatments.
-
Using advanced MRI to understand how Filgotinib relieves pain in rheumatoid arthritis
This study is testing how Filgotinib helps relieve pain in people with rheumatoid arthritis by looking at brain activity and inflammation.
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Better After Choosing: Filgotinib versus TNF inhibitor options for rheumatoid arthritis
This trial will test whether letting adults with active rheumatoid arthritis choose between the oral JAK inhibitor filgotinib or a TNF-blocking biologic leads to higher treatment satisfaction compared with being randomly assigned to one of those treatments.
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Sequential medication options after TNFi failure in juvenile idiopathic arthritis
This test looks at whether switching to one of three non‑TNFi medicines or trying a different TNFi helps children aged 2–17 with polyarticular‑course JIA who didn't improve on their first TNFi.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.