The prionopathies are best known among the neurodegenerative diseases for their ability to misfold, self-propagate, and infect other organisms. […] In this review, we detail the role of a key protein aberration known to the various prion diseases, including sporadic, variant, and iatrogenic Creutzfeldt-Jakob disease; variably protease-sensitive prionopathy; Gerstmann-Straussler-Scheinker disease; fatal familial insomnia; and kuru.
Source: wiktionary