Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile 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, GeneticNucleic Acid ConformationPedigreeInverted Repeat SequencesTandem Repeat SequencesMinisatellite RepeatsAge of OnsetCell AggregationCerebellar AtaxiaIntranuclear Inclusion BodiesPolymerase Chain ReactionMuscular Dystrophy, OculopharyngealChromosome FragilityRNA-Binding ProteinsGenetic Diseases, InbornPolymorphism, GeneticAmyotrophic Lateral SclerosisNeurodegenerative DiseasesNuclear ProteinsPeptidesAmino Acid SequenceProteinsPhenotypeSequence Analysis, DNATranscription, GeneticMice, TransgenicDNA RepairModels, GeneticDNA PrimersReceptors, AndrogenGenotypeRNA, MessengerExonsDNA-Binding ProteinsSaccharomyces cerevisiaeGenes, DominantDNA ReplicationGenome, HumanHeterozygoteRepetitive Sequences, Amino AcidMyoclonic Epilepsies, ProgressiveGenetic MarkersGenetic VariationDisease Models, AnimalCell LineMutS Homolog 2 ProteinNucleic Acid HeteroduplexesGene FrequencyPlatelet Aggregation InhibitorsSaccharomyces cerevisiae ProteinsPromoter Regions, GeneticChromosome Mapping