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The familial occurrence of focal segmental glomerular sclerosis
F A McCurdy1, P J Butera, R Wilson
1Department of Nephrology, Wilford Hall USAF Medical Center, Lackland Air Force Base, TX.
Insights
Genetic factors may play a role in focal segmental glomerulosclerosis (FSGS). This Hispanic family study observed FSGS in three siblings, with two progressing to end-stage renal disease.
Area of Science:
- Nephrology
- Genetics
- Pediatric Nephrology
Background:
- Focal segmental glomerulosclerosis (FSGS) is a significant cause of kidney disease in children and adults.
- Understanding the etiology of FSGS is crucial for developing targeted therapies.
Observation:
- A Hispanic family with three affected siblings presented with early-onset proteinuria.
- All siblings demonstrated focal segmental glomerulosclerosis (FSGS) with mesangial hypercellularity on renal biopsy.
- Two siblings progressed to end-stage renal disease requiring kidney transplantation.
Findings:
- Human Leukocyte Antigen (HLA) DRw8 was present in all three affected siblings and their father.
- The familial clustering and HLA association suggest a genetic predisposition to FSGS.
Implications:
- This case series highlights the potential genetic contribution to the development of focal segmental glomerulosclerosis (FSGS).
- Further research into genetic factors and HLA associations may identify novel diagnostic markers and therapeutic targets for FSGS.
Abstract:
We have observed the occurrence of focal segmental glomerulosclerosis in all three siblings of a single Hispanic family. Each of the children had the onset of significant proteinuria on or before the age of 10. The two oldest children have had progression of their disease to end-stage with subsequent successful transplantation. The youngest sibling continues to have normal renal function. All three patients had renal biopsies prior to the onset of renal insufficiency and each of the biopsies showed the presence of focal segmental glomerulosclerosis with mild diffuse mesangial hypercellularity. Finally, HLA-typing revealed the presence of DRw8 in all three siblings and the father. This report further suggests that genetic factors may be quite important in the development of the lesion of focal segmental glomerulosclerosis.