In 2011, an intronic (G4C2)•(G2C4) expansion was shown to cause the most common forms of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). This discovery linked ALS with a clinically distinct form of dementia and a larger group of microsatellite repeat diseases, and catalyzed basic and translational research.
Keywords: ALS; C9orf72; CCGGGG; FTD; GGGGCC; RAN translation; RNA foci; amyotrophic lateral sclerosis; frontotemporal dementia; repeat-associated non-ATG translation.
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