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Long-term outcome of IgA nephropathy with minimal change disease: a comparison between patients with and without

Xiao-Wei Li1,2, Shao-Shan Liang2, Wei-Bo Le2

  • 1Department of Nephroloy, Fuyang People's Hospital, 236003, Fuyang, Anhui, China.

Journal of Nephrology
|November 6, 2015
PubMed
Abstract

Insights

Minimal change disease in IgA nephropathy (MCD-IgAN) patients demonstrates a significantly better long-term renal outcome compared to IgA nephropathy without minimal change disease (Non-MCD-IgAN). This finding highlights key differences in disease progression and prognosis.

Area of Science:

  • Nephrology
  • Immunology
  • Pathology

Background:

  • Immunoglobulin A nephropathy (IgAN) is a common primary glomerulonephritis.
  • The co-occurrence of minimal change disease (MCD) with IgAN (MCD-IgAN) presents unique clinicopathological characteristics.
  • Limited data exists on the treatment response and long-term outcomes for MCD-IgAN.

Purpose of the Study:

  • To define the clinicopathological features of MCD-IgAN.
  • To compare the treatment response and long-term renal outcomes of MCD-IgAN versus Non-MCD-IgAN.
  • To identify risk factors for renal survival in these patient cohorts.

Main Methods:

  • Systematic review and comparison of biopsy-proven MCD-IgAN patients (n=247) with Non-MCD-IgAN patients (n=1,121) from a dedicated IgA nephropathy registry.
  • Analysis of demographic, clinical, laboratory, and renal pathology data.
  • Kaplan-Meier survival analysis and multivariate Cox regression to assess renal survival and identify independent risk factors.

Main Results:

  • MCD-IgAN patients were younger, predominantly male, with higher proteinuria and cholesterol, better eGFR, and less severe renal pathology compared to Non-MCD-IgAN.
  • Significantly lower rates of renal endpoint (1.6% vs. 14.0%) and no end-stage renal disease (ESRD) were observed in MCD-IgAN patients.
  • MCD-IgAN demonstrated a significantly better renal outcome (p < 0.01) with proteinuria, hypertension, and reduced eGFR being independent risk factors only in Non-MCD-IgAN.

Conclusions:

  • Patients with MCD-IgAN exhibit a substantially better long-term renal prognosis compared to those with Non-MCD-IgAN.
  • The distinct clinical and pathological profiles correlate with improved renal survival in MCD-IgAN.
  • Risk factors for renal disease progression differ between MCD-IgAN and Non-MCD-IgAN.
Keywords:
IgA nephropathyLong-term outcomeMinimal change lesions

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