• Junli Zheng, Xuezhong Gong, and Zhaolong Wu.
• Department of Nephrology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 274 Zhijiang Middle Road, Shanghai, China.
• Niger J Clin Pract. 2020 Apr 1; 23 (4): 437-449.

AbstractIgA nephropathy (IgAN) is the most common form of glomerulonephritis in the world. Immunosuppressive therapy has been widely used in IgAN patients at home and abroad. The present meta-analysis aimed to assess the efficacy and safety of different immunosuppressive agents in patients with biopsy proven IgAN, in order to provide guidance for the clinical treatment of IgAN treatment options. We conducted a meta-analysis of the published randomized controlled trials (RCTs). PubMed, EMBASE, Web of Science, Cochrane Library, Medline, WanFang, Weipu, and CNKI were searched for relevant RCTs published between 2000 and December 2017. Data were analyzed with the random effects model using Review Manager5.3 to evaluate the effect of immunosuppressive agents on IgAN. 52 RCTs were involving 2,930 patients were included in the review. Compared with steroids, immunosuppressive agents, including acetazolamide (AZA) [complete response (CR)/partial response (PR); relative risk (RR), 5.92; 95% confidence interval (CI) 3.07-11.44; P< 0.00001], leflunomide (LEF) (CR/PR; RR, 1.63; 95% CI,1.22-2.17; P = 0.0008), mycophenolate mofetil (MMF) (CR/PR; RR, 1.59; 95%CI, 1.02-2.49; P = 0.04), cyclophosphamide (CTX) (CR/PR; RR, 3.39; 95%CI, 1.03-11.14; P = 0.04), and Tacrolimus (TAC) (CR/PR; RR, 1.72; 95%CI, 0.99-2.96; P = 0.05) resulted in increased partial or complete proteinuria remission. There was no significant difference in the total effective rate between MMF and Placebo (CR/PR; RR, 0.92; 95% CI, 0.33-2.56; P = 0.87). Compared with CTX, MMF showed higher effectiveness (CR/PR; RR, 3.32; 95% CI, 1.83-6.01; P< 0.0001) and LEF showed higher effectiveness (CR/PR; RR, 1.85; 95% CI, 1.17C-2.92; P = 0.009) with a lower incidence of adverse events. The results showed that immunosuppressive agents are a promising strategy and should be investigated further. MMF is the safest, the best therapeutic result and the least side effects than the other immunosuppressive agents.

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