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Serum immunoglobulin E can predict minimal change disease before renal biopsy
Yen-Ning Shao1, Yung-Chang Chen, Chang-Chyi Jenq
1Department of Nephrology, Renal Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taipei, Taiwan.
Objectives:
Minimal change disease (MCD) is a major cause of nephrotic syndrome in both children and adults. The diagnosis of MCD in adults relies on findings of renal biopsy. Complications, although rare, may occur. This invasive procedure is also a suffering experience for some patients. Although Shu et al described the increase of serum immunoglobulin E (IgE) level in patients with MCD, whether IgE could be a predicting factor of MCD has not been determined.
Methods:
The sample was composed of 76 nonlupus patients with nephrotic range (>or=3.5 g/d/1.73 m) proteinuria and normal creatinine level who received renal biopsy since January 2006 to December 2007. Twenty-four demographic, clinical, and laboratory variables as predictors of MCD, including IgG, IgA, IgM, and IgE, were retrospectively gathered by chart review 1 day before renal biopsy.
Results:
The overall prevalence of MCD in this group (nonlupus and normal creatinine level) was 27.6% (21 of 76). The independent Student t test identified that 3 of 24 variables is statistically significant (P < 0.05). Serum IgE was found to have a good discriminative power (area under the receiver operating characteristic curve 0.868 +/- 0.053; P < 0.001) according to the area under the receiver operating characteristic curve.
Conclusions:
Serum IgE exhibited high discriminative power in predicting MCD. Serum IgE is a straightforward and easily applied evaluative tool with good predictive abilities.
Insights
Serum immunoglobulin E (IgE) shows high discriminative power for predicting minimal change disease (MCD). This finding suggests IgE is a valuable, easily applied tool for diagnosing MCD, potentially reducing the need for invasive renal biopsies.
Area of Science:
- Nephrology
- Immunology
Background:
- Minimal change disease (MCD) is a primary cause of nephrotic syndrome.
- Renal biopsy is the standard diagnostic method for MCD in adults, but it is invasive.
- Previous research indicated elevated serum immunoglobulin E (IgE) in MCD patients, but its predictive value was undetermined.
Purpose of the Study:
- To investigate the predictive value of serum immunoglobulin E (IgE) for diagnosing minimal change disease (MCD).
- To evaluate IgE as a potential non-invasive biomarker for MCD.
Main Methods:
- Retrospective analysis of 76 non-lupus patients with nephrotic-range proteinuria and normal creatinine.
- Collected 24 demographic, clinical, and laboratory variables, including IgE levels, prior to renal biopsy.
- Utilized receiver operating characteristic (ROC) curve analysis to assess IgE's discriminative power.
Main Results:
- Minimal change disease (MCD) prevalence was 27.6% in the study cohort.
- Serum IgE demonstrated significant discriminative power for predicting MCD (Area Under Curve = 0.868, P < 0.001).
- IgE emerged as a statistically significant predictor among the evaluated variables.
Conclusions:
- Serum IgE is a highly effective biomarker for predicting minimal change disease (MCD).
- IgE offers a straightforward, easily applicable, and predictive tool for MCD diagnosis.
- This finding may lead to less invasive diagnostic approaches for MCD.
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