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Is Motor Neuron Disease (ALS) Genetic?
- Heritability
- ~60%
- Inheritance
- autosomal-dominant
- Key genes
- SOD1 C9orf72 FUS
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~10% of ALS is familial; SOD1 was the first causative gene. C9orf72 hexanucleotide expansions are the most common cause of both ALS and FTD.
How Genetic Is Motor Neuron Disease (ALS)?
Motor Neuron Disease (ALS) involves complex interactions between multiple genes and environmental factors. Heritability estimates range up to 60%, though no single gene determines outcome on its own.
Key genes associated with Motor Neuron Disease (ALS): SOD1 C9orf72 FUS. 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 Motor Neuron Disease (ALS)?
Family history can be informative for Motor Neuron Disease (ALS), 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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