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Gerstmann-Sträussler-Scheinker disease and the French-Alsatian A117V variant
M Mohr1, C Tranchant, G Steinmetz
1Institut d'Anatomie Pathologique, Faculté de Médecine, Strasbourg.
Clinical and Experimental Pathology
|September 3, 1999
Summary
Gerstmann-Sträussler-Scheinker disease is a rare, inherited prion disorder linked to PrP gene mutations. This autosomal dominant condition causes ataxia and dementia, with amyloid deposits observed in the brain.
Area of Science:
- Neurology
- Genetics
- Pathology
Background:
- Gerstmann-Sträussler-Scheinker disease (GSS) is a rare, inherited prion disease.
- It is an autosomal dominant disorder linked to specific mutations in the prion protein (PrP) gene.
- Eight distinct PrP gene mutations have been identified in GSS patients.
Purpose of the Study:
- To review the clinical and neuropathological features of Gerstmann-Sträussler-Scheinker disease.
- To highlight the genetic basis and phenotypic variability of this prion disorder.
Main Methods:
- Review of existing literature on Gerstmann-Sträussler-Scheinker disease.
- Analysis of reported genetic mutations and associated clinical symptoms.
- Examination of neuropathological findings, including PrP amyloid deposits.
Main Results:
- GSS presents with variable symptoms, primarily ataxia and dementia, typically emerging between the fourth and sixth decades.
- The disease duration averages five years, longer than other familial prion diseases.
- Neuropathology is characterized by widespread PrP amyloid deposits; spongiform changes and neurofibrillary tangles are inconstant.
Conclusions:
- Gerstmann-Sträussler-Scheinker disease is a genetically determined prionopathy with significant clinical and pathological heterogeneity.
- The pathogenesis of GSS amyloidosis and the reasons for its diverse phenotypes require further investigation.