Abstract
Objectives
This retrospective study aimed to analyze the clinical and laboratory features, disease activity, and outcomes of juvenile systemic lupus erythematosus (jSLE) patients from southern China.
Methods
A total of 173 jSLE patients who attended Rheumatology and Immunology Department of Meizhou People’s Hospital between January 2010 and December 2019 are included for analysis.
Results
The mean age of disease onset was 13.65 ± 2.80 (range, 5–17). The median age at diagnosis was 13.98 ± 2.88 (range, 5–17) years. The female to male ratio was 6.5:1. Renal involvement was the most prevalent clinical feature, occurred in 71.7% of the patients. A total of 27 (15.6%) patients underwent renal biopsy, and the most common type of renal pathology was class IV (44.4%). Our study demonstrated differences in antibody clusters for which the positivity rates of anti-dsDNA antibodies and anti-Sm antibodies were higher than the other jSLE cohorts reported in China and worldwide. Cyclophosphamide combined with corticosteroids was the main treatment medication. The mean SLE Disease Activity Index (SLEDAI) score at diagnosis was 14.3 ± 7.6 (range, 3–38). Five patients died during the initial diagnosis and treatment. Infection was the major cause of death.
Conclusion
The jSLE patients in this cohort had a higher prevalence of renal involvement, anti-dsDNA antibodies, and anti-Sm antibodies. Multicenter studies are needed to clarify the different clinical features of jSLE in southern China.
Key Points
• A single-center study of juvenile systemic lupus erythematosus in clinical and laboratory features.
• The jSLE patients had a higher prevalence of renal involvement and antibody disorder.
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Funding
This study was supported by Scientific Research Talent Cultivation Fund of Meizhou People’s Hospital (PY-C2020009) and the Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population (2018B030322003).
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WL conceived and designed the experiments, and wrote the manuscript; SL, CC, and LZ recruited subjects and collected clinical data. CC and LZ conducted the laboratory testing. WL and SL helped to analyze the data. All authors read and approved the final manuscript.
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The study was approved by the Ethics Committee of Meizhou People’s Hospital, Meizhou Hospital Affiliated to Sun Yat-sen University.
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Li, W., Liu, S., Zhong, L. et al. Clinical and laboratory features, disease activity, and outcomes of juvenile systemic lupus erythematosus at diagnosis: a single-center study from southern China. Clin Rheumatol 40, 4545–4552 (2021). https://doi.org/10.1007/s10067-021-05784-7
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DOI: https://doi.org/10.1007/s10067-021-05784-7