Fibrillary glomerulonephritis: An apparent familial form?

Area of Science:

• Nephrology
• Genetics
• Pathology

Background:

• Fibrillary glomerulonephritis (FGN) is a rare kidney disease characterized by non-amyloid fibrillary deposits.
• It is typically considered idiopathic but can be associated with secondary causes like monoclonal gammopathy, infections, autoimmune diseases, and malignancies.

Observation:

• Two Australian families presented with apparent familial FGN, suggesting an autosomal dominant inheritance pattern.
• Family 1: Affected father and daughter; daughter progressed to end-stage renal failure rapidly.
• Family 2: Affected mother and son; mother required dialysis and transplantation, son remains stable.

Findings:

• The study postulates a primary familial FGN entity based on observed inheritance patterns.
• Histopathology, clinical progression, and treatment outcomes were documented for affected individuals.
• A family history in the second family revealed a third member who died of 'Bright's disease'.

Implications:

• This research highlights the potential genetic basis of FGN, suggesting a primary familial form.
• Understanding the genetic component is crucial for diagnosing and managing this heterogeneous condition.
• The findings emphasize the poor renal outcomes associated with FGN, necessitating further research into effective treatments.