A Phase 4 interventional study of Methotrexate and TNF Inhibitor in Juvenile Idiopathic Arthritis, sponsored by Oslo University Hospital. Recruiting at 7 sites in Norway. Open to participants aged 2 Years to 17 Years. Per ClinicalTrials.gov, last updated 2025-03-24.
Sponsored by Oslo University Hospital · Phase 4, Interventional, and Treatment
The goal of this clinical trial is to compare three different maintenance and step-down treatment strategies in children and adolescents with juvenile idiopathic arthritis in sustained remission. The main questions it aims to answer are:
Participants will be randomized to either A) continued stable treatment with methotrexate and tumor-necrosis alpha inhibitor (TNFi); B) gradual withdrawal of methotrexate while continued stable dose TNFi; or C) gradual withdrawal of TNFi.
Participants will be examined every 4 month, and with extra visits if they experience increased symptoms or suspect a disease flare. If a flare occurs, the medications received at study inclusion will be restarted.
3,554 studies on the registry are indexed under Arthritis; 317 are open to participants now.
This study's planned enrollment of 150 is above the median of 90 across 2,377 interventional studies indexed under Arthritis.
Browse Arthritis studies →Oslo University Hospital is the lead sponsor of 810 studies on the registry; 148 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Stable treatment with methotrexate and TNFi
Drug: Methotrexate · Drug: TNF Inhibitor
Gradual withdrawal of methotrexate
Drug: Methotrexate
Gradual withdrawal of TNFi
Drug: TNF Inhibitor
Gradual withdrawal of the medication
Gradual withdrawal of the medication
Proportion of patients with disease flare
Disease flare is defined as a combination of: A clinical significant increase in Juvenile Arthritis Disease Activity Score 27 (JADAS-27\*) ≥1.7 from baseline AND active joints ≥1 (swollen, or tender + limited range of motion) OR consensus between treating physician and participant/parents that a clinically significant flare has occurred with need of intensification of antirheumatic treatment. \*JADAS-27 is a composite measure of juvenile idiopathic arthritis (JIA) disease activity, calculated as a sum of scores from four components giving a score of 0-57. The components included are physician global assessment of disease activity, parent/patient's global assessment of well-being, active joint count of 27 joints and erythrocyte sedimentation rate (ESR) normalized to a 0-10 scale.
Time frame: 4, 8 and 12 months
Proportion of patients with disease flare between two different withdrawal strategies
Disease flare is defined as a combination of: A clinical significant increase in Juvenile Arthritis Disease Activity Score 27 (JADAS-27\*) ≥1.7 from baseline AND active joints ≥1 (swollen, or tender + limited range of motion) OR consensus between treating physician and participant/parents that a clinically significant flare has occurred with need of intensification of antirheumatic (DMARD) treatment. \*JADAS-27 is a composite measure of JIA disease activity, calculated as a sum of scores from four components giving a score of 0-57. The components included are physician global assessment of disease activity, parent/patient's global assessment of well-being, active joint count of 27 joints and ESR normalized to a 0-10 scale.
Time frame: 4, 8 and 12 months
Time to disease flare
JADAS-27, physician's global assessment of diseasae activity, paren't/patient's global assessment, swollen, tender and range of motion joint count (assessed in 71 joints), ESR/CRP, consensus between treating physiciand and patient/parents (uveitis, arthritis on imaging, psoriasis, inflammatory back pain, enthesitis, other; yes/no) \*JADAS-27 is a composite measure of JIA disease activity, calculated as a sum of scores from four components giving a score of 0-57. The components inculded are physician global assessment of disease activity, parent/patient's global assessment of well-being, active joint count of 27 joints and ESR normalized to a 0-10 scale.
Time frame: 4, 8 and 12 months
Time to regain inactive disease by the Wallace definition* after flare
JADAS-27, Wallace inactive disease\*, physician's global assessment of disease activity, paren't/patient's global assessment, swollen, tender and range of motion joint count (assessed in 71 joints), ESR/CRP, consensus between treating physiciand and patient/parents (uveitis, arthritis on imaging, psoriasis, inflammatory back pain, enthesitis, other; yes/no). \*Wallace inactive disease: No active arthritis, no active uveitis, no morning stiffness \>15 minutes, no systemic features (fever/rash/serositis/splenomegaly/lymphadenopathy due to JIA), a physician global assessment of disease activity 0 on a 0-100 scale) and normalization of C-reactive protien (CRP) and ESR.
Time frame: 4, 8 and 12 months
Physician global assessment of disease activity
Physician global assessment of disease activity is measured on a 100 mm visual analogue scale (VAS). The anchors of the scale are "very well" to "very poor".
Time frame: 4, 8 and 12 months
Disease activity assessed by joint count
In total 68 joints will be evaluated for swelling, 75 joints/joint areas will be evaluated for tenderness and 70 joints/joint areas will be examined for limitation of motion. JADAS10, JADAS27 and JADAS71 and 71-joint count will be computed from this examination
Time frame: 4, 8 and 12 months
Patient's/parent's global assessment of well-being
Patient's/parent's global assessment of well-being will be assessed on a 100 mm visual analouge scale.
Time frame: 4, 8 and 12 months
Concentration of Erythrocyte sedimentation rate (ESR),
Erythrocyte sedimentation rate (ESR), will be measured at all clinical visits
Time frame: 4, 8 and 12 months
Concentration of C-reactive protein (CRP)
C-reactive protein (CRP) will be measured at all clinical visits
Time frame: 4, 8 and 12 months
Numbers and type of adverse events (AE)
Assessment of AE, serious AE and suspected unexpected serious adverse reactions
Time frame: 4, 8 and 12 months
Plan to share: Yes — A de-identified patient data set can be made available to researchers upon reasonable request.
Supporting information: Study protocol, Sap, Icf
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Oslo University Hospital