Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaMyotonic DystrophyDNA Repeat ExpansionSpinocerebellar DegenerationsFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinIron-Binding ProteinsAllelesMutationRepetitive Sequences, Nucleic AcidBase SequenceSpinocerebellar AtaxiasMachado-Joseph DiseaseMolecular Sequence DataHeredodegenerative Disorders, Nervous SystemNerve Tissue ProteinsGenomic InstabilityDNAFrontotemporal DementiaFlap EndonucleasesMicrosatellite RepeatsAnticipation, GeneticIntranuclear Inclusion BodiesNucleic Acid ConformationInverted Repeat SequencesPedigreeTandem Repeat SequencesMinisatellite RepeatsRNA-Binding ProteinsAge of OnsetCerebellar AtaxiaPolymerase Chain ReactionChromosome FragilityMuscular Dystrophy, OculopharyngealGenetic Diseases, InbornPolymorphism, GeneticAmyotrophic Lateral SclerosisNuclear ProteinsNeurodegenerative DiseasesSequence Analysis, DNAPhenotypeProteinsAmino Acid SequenceProtein-Serine-Threonine KinasesTranscription, GeneticMice, TransgenicPeptidesRNA, MessengerDNA RepairModels, GeneticDNA PrimersReceptors, AndrogenGenotypeMyotonic DisordersExonsDNA-Binding ProteinsGenes, DominantDNA ReplicationSaccharomyces cerevisiaeGenome, HumanMyoclonic Epilepsies, ProgressiveDisease Models, AnimalHeterozygoteGenetic MarkersRepetitive Sequences, Amino AcidGenetic VariationRNAMutS Homolog 2 ProteinCell LineNucleic Acid HeteroduplexesGene Frequency