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| Form or Etiology | Phenotype |
|---|---|
| Acquired by infection | Kuru |
| vCJD | |
| Iatrogenic CJD | |
| Familial | Creutzfeldt-Jakob disease |
| Fatal familial insomnia | |
| Gerstmann-Sträussler-Scheinker d. | |
| Non specific or mixed phenotype | |
| Sporadic | Creutzfeldt-Jakob disease (with five phenotypes) |
| Fatal insomnia (FI) | |
| Variably protease-sensitive prionopathy (VPSPr)? (with three phenotypes)? |
