Trinucleotide Repeat ExpansionTrinucleotide RepeatsMicrosatellite RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinDNA, SatelliteAllelesPolymorphism, GeneticIron-Binding ProteinsGenetic MarkersMolecular Sequence DataBase SequenceDNA PrimersGenetic VariationPolymerase Chain ReactionMutationRepetitive Sequences, Nucleic AcidAmino Acid MotifsSpinocerebellar AtaxiasMachado-Joseph DiseaseDNAHeredodegenerative Disorders, Nervous SystemNerve Tissue ProteinsDinucleotide RepeatsGenomic InstabilityAmino Acid SequenceNucleic Acid ConformationMinisatellite RepeatsFrontotemporal DementiaFlap EndonucleasesTandem Repeat SequencesPedigreeAnticipation, GeneticSequence Analysis, DNAInverted Repeat SequencesRNA-Binding ProteinsCerebellar AtaxiaAge of OnsetIntranuclear Inclusion BodiesModels, GeneticChromosome FragilityGenetic Diseases, InbornMuscular Dystrophy, OculopharyngealGenotypeNuclear ProteinsChromosome MappingProteinsPhenotypePeptidesAmyotrophic Lateral SclerosisGenome, HumanGene FrequencyTranscription, GeneticHaplotypesNeurodegenerative DiseasesDNA RepairHeterozygoteDNA-Binding ProteinsGenetics, PopulationEvolution, MolecularNucleotide MotifsConserved SequenceGenetic LinkageSaccharomyces cerevisiaeSequence AlignmentExonsPhylogenyReceptors, AndrogenBinding SitesMice, TransgenicDNA, PlantRNA, MessengerDNA ReplicationSequence Homology, Amino AcidTranscription FactorsPromoter Regions, GeneticCell LineRepetitive Sequences, Amino AcidMutS Homolog 2 ProteinGenes, DominantRecombination, GeneticExpressed Sequence TagsDNA Mutational AnalysisSaccharomyces cerevisiae ProteinsSequence DeletionMyoclonic Epilepsies, ProgressiveProtein BindingCloning, MolecularRNAOligodeoxyribonucleotidesChromosomes, Human, XNucleic Acid HeteroduplexesSpecies SpecificityGenetic LociDisease Models, Animal