Renal Biopsy Insights in Glomerular Disease

Renal biopsy remains the cornerstone of diagnosis and prognostication in glomerular disease, offering direct visualisation of tissue architecture, cellular composition and immune deposits. Light microscopy, immunofluorescence and electron microscopy together delineate the spectrum of primary and secondary glomerulopathies, from minimal change disease to membranous nephropathy and focal segmental glomerulosclerosis. Advances in digital pathology and integration with molecular profiling have refined lesion classification and supported the development of quantitative histopathological scoring systems. These scores, incorporating glomerulosclerosis, tubular atrophy and interstitial fibrosis, correlate with clinical indices such as estimated glomerular filtration rate and proteinuria, guiding therapeutic decision-making. Global registry data reveal shifting epidemiology, with membranous nephropathy increasing in many regions and immunoglobulin A nephropathy remaining prevalent among younger cohorts. Biopsy outcomes inform personalised approaches, identifying patients who may benefit from immunosuppression, targeted biologics or supportive care. The technique also underpins translational research into disease mechanisms, enabling correlation of histological features with genetic and immunological biomarkers and fostering the design of precision medicines for end-stage renal disease prevention.

Research from Nature Portfolio

A large retrospective analysis of over 34 000 native biopsies across two five-year intervals has illuminated regional shifts in glomerular disease prevalence. Nephrotic syndrome persisted as the primary indication for biopsy, while membranous nephropathy nearly doubled to become the most common primary glomerulonephritis among adults. Conversely, minimal change disease and certain immune-complex glomerulonephritides declined. Secondary forms such as diabetic and obesity-related glomerulopathies also rose, reflecting broader public health trends. Detailed morphometric evaluation in this study underlined the value of longitudinal biopsy registries for unravelling changing disease patterns and for hypothesis generation into environmental and genetic drivers of glomerular injury.

Renal Biopsy Insights in Glomerular Disease publication trend

The graph below shows the total number of articles in renal biopsy insights in glomerular disease across all publications each year (not limited to Nature Index journals).

Technical terms

Renal biopsy: Sampling of kidney tissue under ultrasound or CT guidance for microscopic analysis.

Glomerular disease: Pathology affecting the glomeruli, the microscopic filtration units of the kidney.

Nephrotic syndrome: Clinical constellation of heavy proteinuria, hypoalbuminaemia and peripheral oedema.

eGFR: Estimated glomerular filtration rate, a calculated index of renal excretory function.

Proteinuria: Abnormal urinary excretion of protein, reflects glomerular barrier disruption.

Histopathological prognostic score: Composite index of glomerulosclerosis, tubular atrophy, interstitial fibrosis and crescents to predict outcomes.

Focal segmental glomerulosclerosis (FSGS): A lesion characterised by scarring in segments of some glomeruli, often causing proteinuria.

References

1. Clinicopathological Characteristics and Disease Chronicity in Glomerular Diseases: A Decade-Long Study at Romania’s Largest Kidney Biopsy Reference Center. Biomedicines (2024).
2. Spectrum of biopsy proven renal diseases in Central China: a 10-year retrospective study based on 34,630 cases. Scientific Reports (2020).
3. Epidemiological features of primary glomerular disease in Turkey: a multicenter study by the Turkish Society of Nephrology Glomerular Diseases Working Group. BMC Nephrology (2020).