Demographic characteristics of patients with genetic CJD (1998–2009), caused by various mutations in PRNP.

All Ins = insertion; bp = base pairs; M = methionine; V = valine; n.d. = not determined;CJD patients with the same mutation belong to the same family. = Creutzfeldt-Jakob disease; GSS = Gerstmann-Sträussler-Scheinker disease; FFI = Fatal Familial Insomnia; PrP-CAA = prion protein cerebral amyloid angiopathy.