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1. AMAPT, a tau gene mutation causing frontotemporal dementia with parkinsonism
2. BAPOE e4, a susceptibility allele for late-onset Alzheimer's disease rather than frontotemporal dementia
3. CC9orf72, a hexanucleotide repeat expansion linked to frontotemporal dementia and motor neurone disease
4. DGRN (progranulin), a mutation causing frontotemporal dementia through progranulin haploinsufficiency
5. EPSEN1, a mutation causing early-onset Alzheimer's disease rather than frontotemporal dementia