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KMID : 1102220220410040452
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Kidney Research and Clinical Practice
2022 Volume.41 No. 4 p.452 ~ p.461
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A multicenter, randomized, open-label, comparative, phase IV study to evaluate the efficacy and safety of combined treatment with mycophenolate mofetil and corticosteroids in advanced immunoglobulin A nephropathy
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Han Sang-Youb
Jung Chan-Young
Lee Sang-Ho
Lee Dong-Won
Lee Sik
Kim Chan-Duck
Choi Bum-Soon
Kim Beom-Seok
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Abstract
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Background: It remains unclear whether immunosuppressive agents are effective in patients with immunoglobulin A nephropathy (IgAN). We investigated the efficacy of a mycophenolate mofetil (MMF) and corticosteroid combination therapy in patients with advanced IgAN.
Methods: We conducted a multicenter, randomized, placebo-controlled, parallel-group study of 48 weeks administration of MMF and corticosteroids in biopsy-proven advanced IgAN patients with estimated glomerular filtration rate (eGFR) of 20-50 mL/min/1.73 m2 and urine protein-to-creatinine ratio (UPCR) of >0.75 g/day. The primary outcome was complete (UPCR < 0.3 g/day) or partial (>50% reduction of UPCR compared to baseline) remission at 48 weeks.
Results: Among the 48 randomized patients, the percentage that achieved complete or partial remission was greater in thecombination therapy group than in the control group (4.2% vs. 0% and 29.1% vs. 5.0%, respectively). Compared with the combination therapy group, eGFR in the control group decreased significantly from week 36 onward, resulting in a final adjusted mean change of -4.39 ± 1.22 mL/min/1.73 m2 (p = 0.002). The adjusted mean changes after 48 weeks were 0.62 ± 1.30 and -5.11 ± 1.30 mL/min/1.73 m2 (p = 0.005) in the treatment and control groups, respectively. The UPCR was significantly different between the two groups; the adjusted mean difference was -0.47 ± 0.17 mg/mgCr and 0.07 ± 0.17 mg/mgCr in the treatment and control group, respectively (p = 0.04). Overall adverse events did not differ between the groups.
Conclusion: In advanced IgAN patients with a high risk for disease progression, combined MMF and corticosteroid therapy appears to be beneficial in reducing proteinuria and preserving renal function.
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KEYWORD
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Corticosteroids, IgA nephropathy, Immunosuppressants, Mycophenolate mofetil, Proteinuria
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