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Is Frontotemporal Dementia Genetic?
- Heritability
- ~50%
- Inheritance
- autosomal-dominant
- Key genes
- C9orf72 MAPT GRN
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FTD has strong heritability (~50%); C9orf72 hexanucleotide expansions are the most common cause of familial FTD and ALS.
How Genetic Is Frontotemporal Dementia?
Frontotemporal Dementia involves complex interactions between multiple genes and environmental factors. Heritability estimates range up to 50%, though no single gene determines outcome on its own.
Key genes associated with Frontotemporal Dementia: C9orf72 MAPT GRN. Variants in these genes have been identified through genome-wide association studies (GWAS) and clinical research as influencing susceptibility or severity.
Source: MedlinePlus Genetics
Does Family History Matter for Frontotemporal Dementia?
Family history can be informative for Frontotemporal Dementia, but its predictive power is limited because many genes — each with small effects — combine with environmental influences. A family history of the condition may prompt earlier or more frequent screening.
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