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Published on: August 9, 2019
Maximal glomerular diameter as a 10-year prognostic indicator for IgA nephropathy.
Hiroshi Kataoka1, Mamiko Ohara, Kazuho Honda
1Department of Medicine, Kidney Center, Tokyo Women’s Medical University, Tokyo, Japan.
Summary
Maximal glomerular diameter (Max GD) predicts kidney disease progression in immunoglobulin A nephropathy (IgAN). Larger Max GD values indicate a higher risk of worsening renal function over time.
Area of Science:
- Nephrology
- Renal Pathology
- Glomerular Diseases
Background:
- Immunoglobulin A nephropathy (IgAN) lacks reliable outcome predictors.
- Maximal glomerular diameter (Max GD) is an indicator of glomerular size.
Purpose of the Study:
- To assess Max GD as a predictor of long-term renal histopathology evolution in IgAN patients.
- To evaluate the correlation between Max GD and renal survival.
Main Methods:
- 43 adult IgAN patients with eGFR ≥50 mL/min/1.73 m² were studied.
- Multivariate Cox proportional hazards and receiver operating characteristics analyses were used.
- Patients were grouped by Max GD (≥242 μm vs. <242 μm) for survival analysis.
Main Results:
- Max GD correlated with age, BMI, and triglycerides at biopsy.
- Max GD predicted eGFR decline and proteinuria over 10 years.
- Patients with Max GD ≥242 μm showed a 1.5-fold increase in serum creatinine (P=0.003).
Conclusions:
- Maximal glomerular diameter is a simple, quantitative prognostic indicator for IgAN progression.
- Max GD aids in predicting disease evolution and renal function decline.
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