Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionMyotonic DystrophyFragile X SyndromeSpinocerebellar DegenerationsFragile X Mental Retardation ProteinHuntington DiseaseIron-Binding ProteinsTripletsAllelesRepetitive Sequences, Nucleic AcidHeredodegenerative Disorders, Nervous SystemMutationBase SequenceSpinocerebellar AtaxiasMolecular Sequence DataNucleic Acid ConformationDNANerve Tissue ProteinsAnticipation, GeneticMachado-Joseph DiseaseGenomic InstabilityFlap EndonucleasesTandem Repeat SequencesMicrosatellite RepeatsRNA-Binding ProteinsMinisatellite RepeatsGenetic Diseases, InbornInverted Repeat SequencesFrontotemporal DementiaPedigreePolymerase Chain ReactionCerebellar AtaxiaIntranuclear Inclusion BodiesAge of OnsetPolymorphism, GeneticNeurodegenerative DiseasesChromosome FragilityModels, GeneticMuscular Dystrophy, OculopharyngealNuclear ProteinsSequence Analysis, DNAPhenotypeDNA RepairPeptidesAmyotrophic Lateral SclerosisDNA PrimersPregnancy, TripletRepetitive Sequences, Amino AcidTranscription, GeneticAmino Acid SequenceDNA ReplicationNucleic Acid HeteroduplexesProteinsExonsSequence DeletionNervous System DiseasesGenome, HumanNucleic Acid DenaturationRNA, MessengerReceptors, AndrogenDinucleotide RepeatsDNA-Binding ProteinsSaccharomyces cerevisiaeMice, TransgenicGenotypeRNAAtaxiaOligodeoxyribonucleotidesHeterozygoteAnkyrin RepeatCell LineGenetic MarkersGenes, DominantMyoclonic Epilepsies, ProgressiveGenetic VariationDisease Models, AnimalMutS Homolog 2 ProteinGene FrequencyIntronsChromosomes, Human, X