Improving the quality of care in children with juvenile idiopathic arthritis: a step in the right direction

Peripheral blood regulatory T cells and disease activity, quality of life, and outcomes in children with juvenile idiopathic arthritis

OBJECTIVES

To measure regulatory T cell (Treg) levels in the peripheral blood of children with juvenile idiopathic arthritis (JIA) and analyse the association of this measure with disease activity, quality of life, adjustment of treatment, and hospitalisation.

METHODS

We conducted a two-phase study (cross-sectional and prospective), including consecutive children with a JIA diagnosis according to ILAR criteria. Our independent variables were Tregs, Th1, Th2, and cytokines in peripheral blood, and our dependent variables in the cross-sectional phase were arthritis category, JIA activity, and patient-reported outcomes. To test associations, we used Spearman's correlation coefficient and the Mann-Whitney U test. In the prospective phase, we explored the probability of treatment adjustment and hospitalisation for JIA during follow-up according to Tregs levels at baseline, using Cox proportional regression.

RESULTS

Our sample included 87 participants (median age 11 years, 63.2% girls). Tregs were not associated with most variables of interest. However, we found that higher Tregs concentration was associated with lower erythrocyte sedimentation rate (ESR) and better subjective disease status and course, while higher IL-10 and TGF-β levels were associated with lower ESR, less pain, and better subjective disease status We found no association between Tregs and treatment adjustments or hospitalisation.

CONCLUSIONS

Higher baseline Treg levels in the peripheral blood of children with JIA may be associated with reduced disease activity and better quality of life, though were not informative on the inflammatory progression on the follow-up.

Validity and Reliability of Four Parent/Patient-Reported Outcome Measures for Juvenile Idiopathic Arthritis Remote Monitoring

OBJECTIVE

The aim of this work was to provide evidence of validity and reliability for 4 parent/child-reported outcome measures included in the Outcome Measures in Rheumatology juvenile idiopathic arthritis core domain set: the evaluation of the child's pain and level of disease activity, the assessment of morning stiffness duration, and an active joint count for proxy/self-assessment.

METHODS

Patients were included in the multinational study Epidemiology Treatment and Outcome of Childhood Arthritis. Criterion validity was assessed by examining the correlation of the 4 tested measures with physician measures and the clinical Juvenile Arthritis Disease Activity Score in 10 joints (cJADAS10) in the whole sample and after grouping patients by International League of Associations for Rheumatology (ILAR) category, geographic area, and education level. Reliability was assessed comparing 2 visits 7-14 days apart with intraclass correlation coefficients (ICCs).

RESULTS

A total of 8,643 parents and 6,060 patients had all the evaluations available. Correlations of tested measures were moderate (0.4-0.7) with physician-reported measures. The level of correlation with the cJADAS10 remained stable after grouping patients by ILAR category, geographic areas, and level of education of the parent filling the questionnaire. In 442 parents and 344 children, ICCs ranged between 0.79 and 0.87 for parents and 0.81 and 0.88 for children.

CONCLUSION

The 4 tested parent/child-reported outcomes showed good criterion validity and excellent reliability. These tools can be considered for remote patient assessment, when in-person evaluation might not be possible.

Comparing the Measurement Properties and Preferability of Patient-reported Outcome Measures in Pediatric Rheumatology: PROMIS vs CHAQ

Objective

The Childhood Health Assessment Questionnaire (CHAQ), though widely used for assessments in pediatric rheumatology, has drawbacks, including low correlation to disease activity and ceiling effects. We sought to determine if any tools from the Patient Reported Outcomes Measurement Information System (PROMIS) improve on these shortcomings and/or are preferred by patients.

Methods

Patients 5–17 years of age with juvenile idiopathic arthritis ( JIA) or juvenile dermatomyositis ( JDM) were recruited from the rheumatology clinics at a Canadian children’s hospital. Participants completed the CHAQ, 3 PROMIS measures (pain interference, mobility, and physical activity), and underwent a standard clinical assessment.

Results

Fifty-two patients participated, 25 with JIA and 27 with JDM. None of the PROMIS measures suffered from ceiling effects, whereas the CHAQ Disability Index (DI) and pain visual analog scales both did, with 50% and 20% of patients achieving the best possible scores, respectively. The PROMIS mobility was moderately correlated to the CHAQ-DI (rs –0.60, 95% CI –0.75 to –0.40), and the PROMIS pain interference was strongly correlated to the CHAQ pain score (rs 0.65, 95% CI 0.43–0.80). No measures correlated with disease activity. Patients preferred the PROMIS to the CHAQ.

Conclusion

The PROMIS pain interference, mobility, and physical activity measures improve in some areas where the CHAQ is weak: they do not suffer from ceiling effects, and patients prefer the PROMIS tools. More work is needed to determine the correlation and responsiveness of the PROMIS tools to changes in disease activity over time before they should be widely adopted for clinical use.

Facilitating patient-centered care: the development of illustrated multidimensional patient-reported outcome measures for children/adolescents with juvenile idiopathic arthritis

OBJECTIVES

To assess the validity, reliability, comprehensibility, and responsiveness to change of an illustrated child/parent multidimensional patient-reported outcome measures (PROMs) questionnaire which can assess construct outcome measures of children with juvenile inflammatory arthritis.

METHODS

A total of 122 children with juvenile idiopathic arthritis were included in this work in a multicenter study. The questionnaire included seven categories: (1) functional ability; (2) health-related quality of life; (3) disease activity measures: pain, global assessment, fatigue, and morning stiffness; (4) self-reported joint tenderness; (5) current medication, side effects, and adherence to therapy; (6) comorbidities; and (7) patient motivation. All the items were supported by illustrations to provide children with a visual impression of what was meant by the questions. The questionnaire has parent and patient versions. The disease activity status was assessed using JADAS-27.

RESULTS

The questionnaire was reliable as demonstrated by a high-standardized alpha (0.890-0.978). The questionnaire items correlated significantly (p < 0.01) with clinical parameters of disease activity. The patient-reported tender joints correlated significantly with the physician's scores (0.842). Changes in functional disability, quality of life, and the motivation score showed significant variation (p < 0.01) with disease activity status in response to therapy. The illustrated PROMs questionnaire showed also a high degree of comprehensibility (9.6).

CONCLUSIONS

Integrating PROMs into standard clinical practice is feasible and applicable. The illustrated questionnaire was valid and reliable. It provides an informative, quantitative measure for the disease activity score set data, and in the meantime, facilitates the assessment of the children's adherence to therapy, comorbidities, and motivation on an individual basis.

Innovative Research Design to Meet the Challenges of Clinical Trials for Juvenile Dermatomyositis

PURPOSE OF REVIEW

This paper aims to provide a summary of the recent therapeutic advances and the latest research on outcome measures for clinical trials in juvenile dermatomyositis (JDM).

RECENT FINDINGS

Recent randomized controlled trials (RCTs) have demonstrated the superiority of the combination of prednisone with methotrexate over other conventional therapies and the potential effectiveness of rituximab in refractory cases. A multinational project has led to develop new criteria for the definition of minimal, moderate, and major improvement in future JDM clinical trials. This effort has been paralleled by the establishment of criteria for clinically inactive disease. The validation of the first composite disease activity score for JDM is in progress. The new outcome measures will increase the reliability of assessment of clinical response in JDM clinical trials and foster future multinational RCTs aimed to investigate novel treatment strategies for refractory forms of JDM.

Current Research in Outcome Measures for Pediatric Rheumatic and Autoinflammatory Diseases

A rational management of children and adolescents with rheumatic and autoinflammatory diseases requires the regular assessment of the level of disease activity and of child health and well-being through the use of well-validated outcome measures. Ideally, such instruments should be simple and feasible and easily applicable in standard clinical practice. In recent years, a number of novel outcome measures have been developed and validated for use in pediatric patients with rheumatic and autoinflammatory illnesses. Furthermore, there has been an increased focus on the appraisal of child and parent perception of the disease impact. The new tools have markedly enlarged the spectrum of disorders and health domains that can be assessed in a standardized way. This progress will help to enhance the reliability of research studies and clinical trials. The aim of the present review is to provide an update of the recent advances in this field of research.

Clinical outcome measures in juvenile idiopathic arthritis

Juvenile idiopathic arthritis (JIA), as a chronic condition, is associated with significant disease- and treatment-related morbidity, thus impacting children's quality of life. In order to optimize JIA management, the paediatric rheumatologist has begun to regularly use measurements of disease activity developed, validated and endorsed by international paediatric rheumatology professional societies in an effort to monitor the disease course over time and assess the efficacy of therapeutic interventions in JIA patients.A literature review was performed to describe the main outcome measures currently used in JIA patients to determine disease activity status.The Juvenile Disease Activity Score (JADAS), in its different versions (classic JADAS, JADAS-CRP and cJADAS) and the validated definitions of disease activity and response to treatment represent an important tool for the assessment of clinically relevant changes in disease activity, leading more and more to a treat-to-target strategy, based on a tight and thorough control of the patient condition. Moreover, in recent years, increasing attention on the incorporation of patient-reported or parent-reported outcomes (PRCOs), when measuring the health state of patients with paediatric rheumatic diseases has emerged.We think that the care of JIA patients cannot be possible without taking into account clinical outcome measures and, in this regard, further work is required.