Primary IgA nephropathy in the Kashmiri population

Area of Science:

• Nephrology
• Pathology
• Epidemiology

Background:

• IgA nephropathy (IgAN) is a leading cause of primary glomerular disease globally, particularly prevalent in Asia.
• The clinicopathological spectrum and prevalence of IgAN in India are not well-documented.
• This study addresses the knowledge gap regarding IgAN in the Indian subcontinent.

Purpose of the Study:

• To determine the prevalence and clinicopathological characteristics of IgA nephropathy in Kashmir, India.
• To analyze the clinical presentation, histopathological findings, and short-term outcomes of IgAN patients.
• To provide insights into the burden and progression of IgAN in a specific Indian population.

Main Methods:

• Retrospective analysis of 126 primary IgAN cases from 298 native kidney biopsies (2013-2015).
• Evaluation of clinical features, including age, gender, blood pressure, and serum creatinine.
• Histopathological assessment using Haas classification and Oxford MEST score, with a three-month follow-up.

Main Results:

• IgAN constituted 42.28% of native kidney biopsies, with a high prevalence in Kashmir.
• The mean age of presentation was 31 years (male:female ratio 2:1), with peak incidence in the third decade.
• Nearly half of the patients presented with renal failure (mean creatinine 3.1 mg/dL), often with advanced histological damage (Haas V and IV), and 72.2% were hypertensive.

Conclusions:

• IgA nephropathy is a significant cause of kidney disease in Kashmir, affecting younger individuals.
• A substantial proportion of patients present with advanced renal failure and 'burnt-out' histology, indicating a poor prognosis.
• Urgent studies are needed to identify underlying factors contributing to IgAN and its progression in India to inform management strategies.