Genes May Play Greater Role In Lou Gehrig's Disease

December 8, 2014 1:43 PM

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In most cases of Lou Gehrig's disease, or amyotrophic lateral sclerosis (ALS), it's not known what caused the condition, but a new study finds genes may play a larger role than previously thought.

Only about 5 to 10 percent of people with ALS have family members with the disease, meaning the cases have a known genetic component. The other 90 to 95 percent of ALS cases are "sporadic"; that is, they do not appear to run in families, and the cause of the disease is often a mystery.

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