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Genetic CJD with a novel E200G mutation in the prion protein gene and comparison with E200K mutation cases

  • Author(s): Kim, MO
  • Cali, I
  • Oehler, A
  • Fong, JC
  • Wong, K
  • See, T
  • Katz, JS
  • Gambetti, P
  • Bettcher, BM
  • Dearmond, SJ
  • et al.
Abstract

A novel point mutation resulting in a glutamate-to-glycine substitution in PRNP at codon 200, E200G with codon 129 MV polymorphism (cis valine) and type 2 PrPSc was identified in a patient with a prolonged disease course leading to pathology-proven Jakob-Creutzfeldt disease. Despite the same codon as the most common genetic form of human PRNP mutation, E200K, this novel mutation (E200G) presented with a different clinical and pathological phenotype, including prolonged duration, large vacuoles, no vacuolation in the hippocampus, severe neuronal loss in the thalamus, mild cerebellar involvement, and abundant punctate linear and curvilinear deposition of PrPSc in synaptic boutons and axonal terminals along the dendrites.

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