The purpose of this study is to evaluate the efficacy and safety of adalimumab given subcutaneously every other week (eow) as compared to placebo in pediatric subjects with Enthesitis Related Arthritis (ERA).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
46
Adalimumab solution for subcutaneous injection.
Placebo for adalimumab solution for subcutaneous injection.
Percent Change in Number of Active Joints With Arthritis From Baseline to Week 12
A joint assessment was recorded at all study visits to assess the number of active joints. A total of 72 joints were assessed for swelling not due to deformity or joints with loss of motion (LOM) plus pain and/or tenderness. Total possible scores ranges from 0 (no active joints) to 72 (all active joints). Baseline is defined as the last nonmissing value prior to the first dose of study drug. Last Observation Carried Forward (LOCF) was used for missing data.
Time frame: Baseline and Week 12
Number of Sites of Enthesitis: Change From Baseline to Week 12
The presence of enthesitis was assessed by pressure at 35 anatomical locations. Enthesitis was classifed as either present or absent. Scores range from 0 to 35, with higher scores representing higher disease activity. Baseline is defined as the last nonmissing value prior to the first dose of study drug. LOCF was used.
Time frame: Baseline and Week 12
Tender Joint Count (TJC72): Change From Baseline to Week 12
Seventy-two joints were assessed by pressure on physical examination. Joint tenderness was classified as either present or absent. Scores range from 0 to 72, with higher scores representing higher disease activity. Baseline is defined as the last nonmissing value prior to the first dose of study drug. LOCF was used.
Time frame: Baseline and Week 12
Swollen Joint Count (SJC68): Change From Baseline to Week 12
Sixty-eight joints were assessed by physical examination. Joint swelling was classified as present or absent. Scores range from 0 to 68, with higher scores representing higher disease activity. Baseline is defined as the last nonmissing value prior to the first dose of study drug. LOCF was used.
Time frame: Baseline and Week 12
Percentage of Participants Achieving Pediatric American College of Rheumatology Pediatric 30% Response (ACR Pedi30)
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The ACR Pedi30 response is defined as ≥30% improvement in at least 3 of 6 juvenile rheumatoid arthritis (JRA) core set criteria with no more than 1 of the 6 criteria with \>30% worsening. The 6 variables for the JRA core set criteria are Physician's Global Assessment (PGA) of participant's disease activity, Parent's Global Assessment of participant's overall well-being, number of active joints (joints with swelling not due to deformity or joints LOM plus pain and/or tenderness), number of joints with LOM, Childhood Health Assessment Questionnaire (CHAQ), and high sensitivity C-reactive protein (hs CRP). Baseline is the last value prior to the first dose of study drug. Non-responder imputation (NRI) was used for missing data.
Time frame: Baseline and Week 12
Percentage of Participants Achieving Pediatric American College of Rheumatology Pediatric 50% Response (ACR Pedi50)
The ACR Pedi50 response is defined as ≥50% improvement in at least 3 of 6 JRA core set criteria with no more than 1 of the 6 criteria with \>30% worsening. The 6 variables for the JRA core set criteria are Physician's Global Assessment (PGA) of participant's disease activity, Parent's Global Assessment of participant's overall well-being, number of active joints (joints with swelling not due to deformity or joints LOM plus pain and/or tenderness), number of joints with LOM, Childhood Health Assessment Questionnaire (CHAQ), and high sensitivity C-reactive protein (hs CRP). Baseline is the last value prior to the first dose of study drug. NRI was used.
Time frame: Baseline and Week 12
Percentage of Participants Achieving Pediatric American College of Rheumatology Pediatric 70% Response (ACR Pedi70)
The ACR Pedi70 response is defined as ≥70% improvement in at least 3 of 6 JRA core set criteria with no more than 1 of the 6 criteria with \>30% worsening. The 6 variables for the JRA core set criteria are Physician's Global Assessment (PGA) of participant's disease activity, Parent's Global Assessment of participant's overall well-being, number of active joints (joints with swelling not due to deformity or joints LOM plus pain and/or tenderness), number of joints with LOM, Childhood Health Assessment Questionnaire (CHAQ), and high sensitivity C-reactive protein (hs CRP). Baseline is the last value prior to the first dose of study drug. Non-responder imputation NRI was used.
Time frame: Baseline and Week 12
Number of Participants With Adverse Events (AEs)
An AE is any untoward medical occurrence in a participant which does not necessarily have a causal relationship with this treatment. A serious AE (SAE) is an event that results in death, is life-threatening, requires or prolongs hospitalization, results in a congenital anomaly, persistent or significant disability/incapacity or is an important medical event that, based on medical judgment, may jeopardize the participant and may require medical or surgical intervention to prevent any of the outcomes listed above. Treatment-emergent events (TEAEs or TESAE) are defined as any event that began or worsened in severity after the first dose of study drug. The investigator assessed the relationship of each event to the use of study drug as either probably related to study drug, possibly related to study drug, probably not related, or not related to study drug. For more details on adverse events please see the AE section below.
Time frame: Treatment-emergent AEs (TEAEs) were collected from first dose of study drug until 70 days after the last dose of study drug (up to 212 weeks)