1. Effect of Oral Methylprednisolone on Decline in Kidney Function or Kidney Failure in Patients With IgA Nephropathy: The TESTING Randomized Clinical Trial
- Author
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Lv, J, Wong, MG, Hladunewich, MA, Jha, V, Hooi, LS, Monaghan, H, Zhao, M, Barbour, S, Jardine, MJ, Reich, HN, Cattran, D, Glassock, R, Levin, A, Wheeler, DC, Woodward, M, Billot, L, Stepien, S, Rogers, K, Chan, TM, Liu, Z-H, Johnson, DW, Cass, A, Feehally, J, Floege, J, Remuzzi, G, Wu, Y, Agarwal, R, Zhang, H, Perkovic, V, and TESTING Study Group
- Subjects
Adult ,Male ,Administration, Oral ,Glomerulonephritis, IGA ,Kidney ,Methylprednisolone ,Proteinuria ,Double-Blind Method ,Renal Dialysis ,General & Internal Medicine ,Disease Progression ,Humans ,Female ,Renal Insufficiency ,11 Medical and Health Sciences - Abstract
Importance: The effect of glucocorticoids on major kidney outcomes and adverse events in IgA nephropathy has been uncertain. Objective: To evaluate the efficacy and adverse effects of methylprednisolone in patients with IgA nephropathy at high risk of kidney function decline. Design, Setting, and Participants: An international, multicenter, double-blind, randomized clinical trial that enrolled 503 participants with IgA nephropathy, proteinuria greater than or equal to 1 g per day, and estimated glomerular filtration rate (eGFR) of 20 to 120 mL/min/1.73 m2 after at least 3 months of optimized background care from 67 centers in Australia, Canada, China, India, and Malaysia between May 2012 and November 2019, with follow-up until June 2021. Interventions: Participants were randomized in a 1:1 ratio to receive oral methylprednisolone (initially 0.6-0.8 mg/kg/d, maximum 48 mg/d, weaning by 8 mg/d/mo; n = 136) or placebo (n = 126). After 262 participants were randomized, an excess of serious infections was identified, leading to dose reduction (0.4 mg/kg/d, maximum 32 mg/d, weaning by 4 mg/d/mo) and addition of antibiotic prophylaxis for pneumocystis pneumonia for subsequent participants (121 in the oral methylprednisolone group and 120 in the placebo group). Main Outcomes And Measures: The primary end point was a composite of 40% decline in eGFR, kidney failure (dialysis, transplant), or death due to kidney disease. There were 11 secondary outcomes, including kidney failure. Results: Among 503 randomized patients (mean age, 38 years; 198 [39%] women; mean eGFR, 61.5 mL/min/1.73 m2; mean proteinuria, 2.46 g/d), 493 (98%) completed the trial. Over a mean of 4.2 years of follow-up, the primary outcome occurred in 74 participants (28.8%) in the methylprednisolone group compared with 106 (43.1%) in the placebo group (hazard ratio [HR], 0.53 [95% CI, 0.39-0.72]; P
- Published
- 2022