Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinIron-Binding ProteinsAllelesMutationRepetitive Sequences, Nucleic AcidSpinocerebellar AtaxiasMachado-Joseph DiseaseBase SequenceHeredodegenerative Disorders, Nervous SystemNerve Tissue ProteinsGenomic InstabilityMolecular Sequence DataFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticMicrosatellite RepeatsDNANucleic Acid ConformationInverted Repeat SequencesMinisatellite RepeatsTandem Repeat SequencesPedigreeCerebellar AtaxiaAge of OnsetIntranuclear Inclusion BodiesChromosome FragilityMuscular Dystrophy, OculopharyngealGenetic Diseases, InbornRNA-Binding ProteinsPolymerase Chain ReactionAmyotrophic Lateral SclerosisPolymorphism, GeneticNeurodegenerative DiseasesNuclear ProteinsPhenotypePeptidesProteinsDNA RepairSequence Analysis, DNAReceptors, AndrogenModels, GeneticMice, TransgenicWeight GainGenotypeDNA PrimersGenes, DominantGenome, HumanDNA ReplicationMyoclonic Epilepsies, ProgressiveTranscription, GeneticMutS Homolog 2 ProteinGenetic MarkersRepetitive Sequences, Amino AcidHeterozygoteExonsSaccharomyces cerevisiaeNucleic Acid HeteroduplexesDNA-Binding ProteinsRNA, MessengerDisease Models, AnimalAmino Acid Sequence