Abstract
Background
Children with severe Henoch–Schönlein purpura nephritis (HSPN) may progress to end-stage renal disease without appropriate treatment.
Objective
This study aimed to investigate the efficacy and safety of tacrolimus combined with glucocorticoids in the treatment of pediatric HSPN.
Methods
A total of 87 HSPN patients with urinary protein ≥ 0.75 g/24 h received standard of care, including angiotensin II receptor blockers/angiotensin-converting enzyme inhibitors and glucocorticoids. Patients were divided into three groups and additionally received tacrolimus (n = 30), cyclophosphamide (n = 31), or mycophenolate mofetil (MMF) (n = 26). We monitored outcome measures, including proteinuria, hematuria, and renal function and analyzed the efficacy and side effects in each group.
Results
At 2-month follow-up, the overall efficacy was 93.3%, 83.9%, and 61.5% for tacrolimus, cyclophosphamide, and MMF, respectively (P < 0.05). Urinary protein significantly decreased for all groups. Urinary red blood cell counts significantly decreased for patients treated with tacrolimus (P < 0.001) and cyclophosphamide (P < 0.05), whereas no significant decrease was seen for those receiving MMF (P = 0.09). Although urine β2-microglobulin significantly decreased following 2 months of treatment with all medications, efficacy was greater with tacrolimus than with cyclophosphamide and MMF (P < 0.001). Major adverse events were respiratory and urinary infections, with MMF having the highest infection rate. The cyclophosphamide group also experienced additional adverse events, including arrhythmia, hemorrhagic cystitis, leukocytosis, thrombocytopenia, and hyperglycemia.
Conclusions
These results indicate that tacrolimus is more effective at reducing proteinuria and hematuria and improving renal function, with relatively milder side effects, in the treatment of pediatric HSPN.
Clinical Trial Registration Number
ChiCTR2200055323, retrospectively registered on January 7, 2022.
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Acknowledgements
The authors thank the patients and their families for facilitating this work. This study was supported in part by startup funding from Nantong Maternity and Child Healthcare Hospital (to YY), the Lanzhou University Second Hospital Introduced Talent Research Project (ynyjrck-yzx2015-2-02, to YY), the Lanzhou University Second Hospital Cuiying Science and Technology Innovation Project (CY2017-MS16, to YY), and the Science and Technology Development Plan of Chengguan District, Lanzhou City, Gansu Province (2017KJGG0050, to YY).
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The studies involving human participants were reviewed and approved by the Ethical Committee of Lanzhou University Second Hospital.
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DW participated in the patient’s care, collected and analyzed the data, and prepared the manuscript. RM participated in the patient's care and collected the data. XW analyzed the data and made critical revision to the manuscript. YY participated in the patient's care, supervised the study, analyzed the data, and wrote the manuscript. All authors have read and approved the manuscript.
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Wu, D., Ma, R., Wang, X. et al. Efficacy and Safety of Tacrolimus in the Treatment of Pediatric Henoch–Schönlein Purpura Nephritis. Pediatr Drugs 24, 389–401 (2022). https://doi.org/10.1007/s40272-022-00506-1
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DOI: https://doi.org/10.1007/s40272-022-00506-1