Dramatic, expansion-biased, age-dependent, tissue-specific somatic mosaicism in a transgenic mouse model of triplet repeat instability.

Abstract excerpt

Myotonic dystrophy type 1 (DM1) is one of a growing number of inherited human diseases whose molecular basis has been implicated as the expansion of a trinucleotide DNA repeat. Expanded disease-associated alleles of >50 CTG repeats are unstable in both the germline and soma. Expansion of the unstable alleles over time and variation of the level of mutation between the somatic tissues of an individual are thought...

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