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IgA nephropathy: a twenty year retrospective single center experience
Jacob Rube1, Alexandra Peyser, Freya Tarapore
1Department of Pediatrics. Division of Nephrology, Schneider Children's Hospital, New Hyde Park, New York.
Clinical Medicine. Pediatrics
|July 3, 2013
Summary
IgA nephropathy (IgAN) severity increased from 1989-2008, with later patients showing higher Up/c and lower albumin. Kidney biopsy may be unnecessary for IgAN patients with normal kidney function and minimal urine findings.
Area of Science:
- Nephrology
- Immunology
- Glomerular Diseases
Background:
- IgA nephropathy (IgAN) is a common glomerular disease with unknown etiology.
- Previous studies have described IgAN features but not longitudinal trends in disease severity.
- This study assesses changes in IgAN severity over a 20-year period.
Purpose of the Study:
- To evaluate trends in IgA nephropathy severity between 1989-1998 and 1999-2008.
- To compare clinical and laboratory features of IgAN patients across two distinct time periods.
- To identify changes in prognostic indicators of IgAN over two decades.
Main Methods:
- Retrospective study of 57 patients with biopsy-confirmed IgA nephropathy.
- Data collected at diagnosis and final follow-up, including physical examination, urine, and blood tests.
- Patients divided into two cohorts: 1989-1998 (Cohort 1) and 1999-2008 (Cohort 2).
Main Results:
- Cohort 2 (1999-2008) showed increased IgAN severity compared to Cohort 1 (1989-1998).
- Significantly higher urine protein/creatinine ratio (Up/c) and lower serum albumin levels were observed in Cohort 2.
- Trends indicated more severe disease over time, with higher GFRe, hematocrit, and glomerular injury scores in later years.
- Treatment and renal function at last follow-up were comparable between cohorts.
Conclusions:
- IgA nephropathy severity has trended towards worsening over the past 20 years.
- Kidney biopsy may not be essential for diagnosing IgAN in patients with normal kidney function and minimal urinary abnormalities.
- Further research is needed to understand the factors contributing to increased IgAN severity.
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