[Growing genes cause neurological diseases].

Abstract excerpt

A growing number of hereditary neurodegenerative disorders have been found to be caused by expansion of trinucleotide repeats. A smaller number of diseases such as fragile X syndrome, myotonic dystrophy, and Friedreich's ataxia, have been found to be due to expansions in non-coding DNA. In a large group of diseases, the expansion consists of CAG repeats in the coding region of the gene, producing an expanded...

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