Abstract
Objective: To develop a Childhood Lupus Improvement Index (CHILI) as a tool to measure response to therapy in childhood-onset systemic lupus erythematosus (cSLE), with a focus on clinically relevant improvement (CRI c SLE ). Methods: Pediatric nephrology and rheumatology subspecialists (n = 213) experienced in cSLE management were invited to define CRI c SLE and rate a total of 433 unique patient profiles for the presence/absence of CRI c SLE . Patient profiles included the following cSLE core response variables (CRVs): global assessment of patient well-being (patient-global), physician assessment of cSLE activity (MD-global), disease activity index score (here, we used the Systemic Lupus Erythematosus Disease Activity Index), urine protein-to-creatinine ratio, and Child Health Questionnaire physical summary score. Percentage and absolute changes in these cSLE-CRVs (baseline versus follow-up) were considered in order to develop candidate algorithms and validate their performance (sensitivity, specificity, area under the receiver operating characteristic curve [AUC]; range 0–1). Results: During an international consensus conference, unanimous agreement on a definition of CRI c SLE was achieved; cSLE experts (n = 13) concurred (100%) that the preferred CHILI algorithm considers absolute changes in the cSLE-CRVs. After transformation to a range of 0–100, a CHILI score of ≥54 had outstanding accuracy for identifying CRI c SLE (AUC 0.93, sensitivity 81.1%, and specificity 84.2%). CHILI scores also reflect minor, moderate, and major improvement for values exceeding 15, 68, and 92, respectively (all AUC ≥0.92, sensitivity ≥93.1%, and specificity ≥73.4%). Conclusion: The CHILI is a new, seemingly highly accurate index for measuring CRI in cSLE over time. This index is useful to categorize the degree of response to therapy in children and adolescents with cSLE.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 579-590 |
| Number of pages | 12 |
| Journal | Arthritis Care and Research |
| Volume | 71 |
| Issue number | 5 |
| DOIs | |
| State | Published - May 2019 |
Bibliographical note
Funding Information:We thank Kasha Wiley (overall study coordination), Susan Priest (consensus conference logistics), Carly Muller, Malea Rolfsen, Allen Watts, Gaurav Gulati, and Jamie Meyers-Eaton (patient profile testing) from Cincinnati Children Hospital Medical Center (CCHMC) as well as CCHMC Biomedical Informatics (web-based data management application development). We are indebted to the members of the External Scientific Advisory Committee of this study for their advice regarding study implementation, conduct, and statistical analysis: Drs. Tuhina Neogi, Ian Bruce, David Isenberg, Nicola Ruperto, and James Witter.
Funding Information:
12Marisa S? Klein-Gitelman, MD: Northwestern University Feinberg School of Medicine and Ann and Robert Lurie Children’s Hospital of Chicago, Chicago, 阀llinois13;J un Ying, PhD: University of Cincinnati, Cincinnati, Ohio? Dr? ?runner has received consulting fees from AbbVie, Ablynx, Amgen, AstraZeneca, ?axalta ?iosimilars, ?iogen 阀dec, ?oehringer 阀ngelheim, ?ristol-Myers Squibb, Celgene, Eli Lilly, EMD Serono, Gilead Sciences, Janssen, Med 阀mmune, Novartis, Pfizer, R-Pharm, Roche, Servier, Takeda (less than $10,000 each), speaking fees from Genentech and Novartis (more than $10,000 each), and Scientific grant support from Pfizer and ?ristol-Myers Squibb for research studies in adult lupus and juvenile idiopathic arthritis? Dr? ?runner is a full-time employee of Cincinnati Children’s Hospital, which has received contributions from ?ristol-Myers Squibb, Ho 贀man-La Roche, Janssen, Novartis, and Pfizer for the coordination activity of the Pediatric Rheumatology Collaborative Study Group network? Dr? Ravelli has received consulting and/or speaking fees from AbbVie, ?ristol-Myers Squibb, Pfizer, Ho 贀man-LaRoche, Novartis, Centocor, “Francesco Angelini,” and Reckitt ?enckiser (less than $10,000 each)? Dr? Avcin has received consulting and/or speaking fees from AbbVie and ?oehringer 阀ngelheim (less than
Funding Information:
Supported by the N 阀H (grants 5U01-AR-51868, P30-AR-AR47363, and 2UL1-RR-026314)? Dr? Silva’s work was supported by grants from Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP 215/03756-4), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq 303422/2015-7 and CNPq 304255/2015-7), and by Núcleo de Apoio à Pesquisa “Saúde da Criança e do Adolescente” da USP (NAP-CriAd)? Dr? Ardoin’s work was supported by CNPq 7/2016-9?
Publisher Copyright:
© 2019, American College of Rheumatology
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