Post Renal Transplant Collapsing Glomerulopathy is Associated with Poor Outcomes

Area of Science:

• Nephrology
• Transplantation Medicine
• Renal Pathology

Background:

• Collapsing glomerulopathy (CG) is a distinct renal injury pattern.
• CG differs from FSGS in clinicopathology and prognosis.
• The significance of CG in renal allografts is poorly understood due to limited data.

Purpose of the Study:

• To determine the prevalence of CG in renal allograft biopsies.
• To analyze the clinicopathological features of CG post-transplant.
• To evaluate the outcome of renal allografts with CG.

Main Methods:

• Retrospective study of 127 renal allograft biopsies over 45 months.
• CG diagnosis based on glomerular collapse and epithelial cell changes.
• Analysis of clinical, biochemical, and pathological data, including graft outcomes.

Main Results:

• CG prevalence was 5.3% (7/127 biopsies).
• Median CG diagnosis was 17 months post-transplant, often presenting with edema and hypertension.
• All patients had significant proteinuria and renal allograft dysfunction; 57.14% experienced graft failure within 2-20 months.

Conclusions:

• Collapsing glomerulopathy in renal allografts is associated with significant proteinuria.
• CG frequently leads to rapid graft dysfunction and high rates of graft failure.
• Early identification and management strategies are crucial for improving outcomes in renal transplant recipients with CG.