Aims: This study aimed to assess retrospectively the efficacy and safety of cyclosporin A (CsA) therapy in patients with lupus nephritis (LN). Materials and methods: From September 2005 to August 2015, eligible patients with LN undergoing CsA treatment were enrolled in the study. Medical charts as well as clinical and laboratory data were retrospectively reviewed. The data were evaluated at 0, 1, 6, 12 month(s) after the start of CsA. Serum creatinine (SCr), estimated glomerular filtration rate (eGFR), urine protein/ creatinine ratio (uPCR), complement components C3, C4, and anti-double stranded DNA antibody (anti-dsDNA) titers were recorded. Renal response to CsA (complete response (CR) and partial response (PR)) and relapse after stopping CsA were set as primary endpoint, and adverse events, progression to end-stage renal disease (ESRD), and all-cause mortality as secondary endpoint. Results: Among 60 patients enrolled, 11.7%, 20%, 25% achieved CR and 65.0%, 51.7%, 40% achieved PR at 1, 6, and 12 months, respectively. The SCr and eGFR remained stable during follow-up. After 1 year, CsA led to a decrease in median uPCR (3.79 to 0.51, p < 0.001) and anti-dsDNA (10.1 to 5.7 IU/ mL, p = 0.011), an increase in mean C3 (75.9 to 88.5 mg/dL, p < 0.001) and C4 (15.9 to 19.5 mg/dL, p < 0.001) as well as a decrease in glucocorticoid dose. There were no deaths or progression to ESRD originating from adverse events in our study. Conclusion: CsA is an effective and safe treatment for patients with LN. Further randomized controlled trials are needed.
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