Definition of Amyotrophic lateral sclerosis 4
Amyotrophic lateral sclerosis 4: ALS4. A juvenile-onset form of amyotrophic lateral sclerosis (ALS) with no bulbar involvement, inherited in an autosomal dominant manner and caused by mutation in a gene on chromosome 9q34.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 6/14/2012
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