Beginning of Effective and Safe Treatment in Immunoglobulin A-1 Nephropathy-1

Summary

Immunoglobulin A nephropathy (IgAN) is the most common glomerulonephritis worldwide. IgAN is progressive, particularly when patients have a significant proteinuria (proteinuria \>1g/g creatinine), impaired kidney function, or elevated blood pressure. In 10 years, nearly 20-40% of these IgAN patients progress to end-stage renal disease (ESRD). Early IgAN is tentatively defined when proteinuria is insignificant and kidney function and blood pressure are normal. Patients with early IgAN rarely progress to ESRD. However, 30-40% of patients with early IgAN ultimately developed a significant proteinuria and hypertension in 10 years. Therefore, earlier intervention may be needed if it can prevent the development of a significant proteinuria and hypertension. Since angiotensin ll receptor blocker (ARB) is drug of choice in reducing proteinuria and controlling blood pressure, the investigators hypothesized that early introduction of ARB may be beneficial in preventing the significant proteinuria development in early IgAN patients. To prove the hypothesis, the investigators plan the current interventional study.

Timeline

Start

2018-01-30

Primary completion

2021-12-31

Completion

2021-12-31

Publications

• Background Li PK, Kwan BC, Chow KM, Leung CB, Szeto CC. Treatment of early immunoglobulin A nephropathy by angiotensin-converting enzyme inhibitor. Am J Med. 2013 Feb;126(2):162-8. doi: 10.1016/j.amjmed.2012.06.028.
• Background Jo YI, Na HY, Moon JY, Han SW, Yang DH, Lee SH, Park HC, Choi HY, Lim SD, Kie JH, Lee YK, Shin SK. Effect of low-dose valsartan on proteinuria in normotensive immunoglobulin A nephropathy with minimal proteinuria: a randomized trial. Korean J Intern Med. 2016 Mar;31(2):335-43. doi: 10.3904/kjim.2014.266. Epub 2016 Feb 15.
• Background Nieuwhof C, Kruytzer M, Frederiks P, van Breda Vriesman PJ. Chronicity index and mesangial IgG deposition are risk factors for hypertension and renal failure in early IgA nephropathy. Am J Kidney Dis. 1998 Jun;31(6):962-70. doi: 10.1053/ajkd.1998.v31.pm9631840.
• Background Lai FM, Szeto CC, Choi PC, Li PK, Chan AW, Tang NL, Lui SF, Wang AY, To KF. Characterization of early IgA nephropathy. Am J Kidney Dis. 2000 Oct;36(4):703-8. doi: 10.1053/ajkd.2000.17614.
• Background Szeto CC, Lai FM, To KF, Wong TY, Chow KM, Choi PC, Lui SF, Li PK. The natural history of immunoglobulin a nephropathy among patients with hematuria and minimal proteinuria. Am J Med. 2001 Apr 15;110(6):434-7. doi: 10.1016/s0002-9343(01)00659-3.
• Background Shen P, He L, Li Y, Wang Y, Chan M. Natural history and prognostic factors of IgA nephropathy presented with isolated microscopic hematuria in Chinese patients. Nephron Clin Pract. 2007;106(4):c157-61. doi: 10.1159/000104426. Epub 2007 Jun 26.
• Background Lee H, Hwang JH, Paik JH, Ryu HJ, Kim DK, Chin HJ, Oh YK, Joo KW, Lim CS, Kim YS, Lee JP. Long-term prognosis of clinically early IgA nephropathy is not always favorable. BMC Nephrol. 2014 Jun 19;15:94. doi: 10.1186/1471-2369-15-94.
• Tunnicliffe DJ, Reid S, Craig JC, Samuels JA, Molony DA, Strippoli GF. Non-immunosuppressive treatment for IgA nephropathy. Cochrane Database Syst Rev. 2024 Feb 1;2(2):CD003962. doi: 10.1002/14651858.CD003962.pub3.

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