Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinPolymorphism, Restriction Fragment LengthIron-Binding ProteinsAllelesPolymorphism, GeneticMutationRepetitive Sequences, Nucleic AcidBase SequencePolymorphism, Single NucleotidePolymerase Chain ReactionMolecular Sequence DataSpinocerebellar AtaxiasAmplified Fragment Length Polymorphism AnalysisMachado-Joseph DiseaseHeredodegenerative Disorders, Nervous SystemGenotypeDNAMicrosatellite RepeatsGene FrequencyMinisatellite RepeatsNerve Tissue ProteinsGenomic InstabilityPedigreeSequence Analysis, DNAFrontotemporal DementiaFlap EndonucleasesTandem Repeat SequencesAnticipation, GeneticNucleic Acid ConformationAge of OnsetInverted Repeat SequencesGenetic Predisposition to DiseaseGenetic VariationGenetic MarkersHaplotypesPhenotypeCerebellar AtaxiaIntranuclear Inclusion BodiesChromosome FragilityMuscular Dystrophy, OculopharyngealGenetic Diseases, InbornDNA PrimersRNA-Binding ProteinsCase-Control StudiesHeterozygoteModels, GeneticAmyotrophic Lateral SclerosisChromosome MappingNuclear ProteinsDNA FingerprintingNeurodegenerative DiseasesExonsDNA RepairProteinsGenetic LinkagePeptidesPhylogenyReceptors, AndrogenDNA, BacterialAmino Acid SequenceDNA Mutational AnalysisGenome, HumanGenes, DominantMice, TransgenicTranscription, GeneticDNA-Binding ProteinsRNA, MessengerBlotting, SouthernBacterial Typing TechniquesPromoter Regions, GeneticDinucleotide RepeatsDNA ReplicationMyoclonic Epilepsies, ProgressiveRecombination, GeneticRepetitive Sequences, Amino AcidMutS Homolog 2 ProteinSaccharomyces cerevisiaeNucleic Acid HeteroduplexesAsian Continental Ancestry GroupDNA, SatelliteDNA, FungalGenetic TestingDisease Models, AnimalX ChromosomeCell LineDNA, RibosomalChromosomes, Human, XPoint MutationSpecies Specificity