Who Gets ALS?
Who Gets ALS?

Familial ALS


There are two major categories of ALS cases.

Sporadic ALS – which refers to cases with no known family history or genetic cause -- is the most common form of the disease in the U.S. It accounts for 90-95% percent of all cases. It may affect anyone, anywhere.

Familial ALS (FALS) – which refers to cases where there is a known family history of the disease – accounts for 5-10% of all cases in the U.S. In families with FALS, there’s a 50% chance each offspring will inherit the gene mutation and may develop the disease.

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Who Gets ALS?