This is most commonly known as Lou Gehrig's disease. Loe Gehrig was a famous baseball player, and his case made it a known disease that received national attention. A study was done in 1991, and familial ALS was found on chromosome 21. Later discoveries pinpointed a mutation in the gene that codes for an enzyme, superoxide dismutase (SOD), as responsible for a percentage of familial cases. These defects do not appear to be present in the more common nonfamilial, or "sporadic," form of the disease. In
Some common words found in the essay are: Loe Gehrig, Lou Gehrig's, Lateral Sclerosis,
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