Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinExonsIron-Binding ProteinsAllelesMutationRepetitive Sequences, Nucleic AcidSpinocerebellar AtaxiasBase SequenceMachado-Joseph DiseaseHeredodegenerative Disorders, Nervous SystemMolecular Sequence DataNerve Tissue ProteinsGenomic InstabilityDNAFrontotemporal DementiaFlap EndonucleasesMicrosatellite RepeatsAnticipation, GeneticNucleic Acid ConformationPedigreeInverted Repeat SequencesMinisatellite RepeatsTandem Repeat SequencesCerebellar AtaxiaAge of OnsetIntranuclear Inclusion BodiesPolymerase Chain ReactionChromosome FragilityMuscular Dystrophy, OculopharyngealGenetic Diseases, InbornRNA-Binding ProteinsPolymorphism, GeneticAmyotrophic Lateral SclerosisNuclear ProteinsNeurodegenerative DiseasesPhenotypeSequence Analysis, DNAProteinsPeptidesDNA RepairModels, GeneticReceptors, AndrogenMice, TransgenicDNA PrimersGenotypeTranscription, GeneticRNA, MessengerAmino Acid SequenceGenome, HumanGenes, DominantHeterozygoteDNA ReplicationMyoclonic Epilepsies, ProgressiveDNA Mutational AnalysisGenetic MarkersMutS Homolog 2 ProteinDNA-Binding ProteinsRepetitive Sequences, Amino AcidNucleic Acid HeteroduplexesSaccharomyces cerevisiaeGene FrequencyIntronsDisease Models, AnimalGenetic Variation