| Aβ | Amyloid Beta peptide 1-42 |
| AD | Alzheimer’s disease |
| CSF | Cerebrospinal fluid |
| cf-mtDNA | Cell-free mitochondrial DNA |
| CJD | Creutzfeldt-Jakob disease |
| dPCR | Digital Polymerase Chain Reaction |
| ND-Ctrl | Control patients diagnosed with neurological diseases without dementia |
| rpAD | Alzheimer’s disease of rapid clinical progression |
| spAD | Alzheimer’s disease of slow clinical progression |
| p-tau | Phosphorylated tau protein |
| t-tau | Total amount of tau protein |
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