Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsAllelesIron-Binding ProteinsPolymorphism, GeneticMutationRepetitive Sequences, Nucleic AcidPolymorphism, Single NucleotideBase SequenceSpinocerebellar AtaxiasMachado-Joseph DiseaseMolecular Sequence DataPolymerase Chain ReactionHeredodegenerative Disorders, Nervous SystemGenetic MarkersGene FrequencyDNADinucleotide RepeatsGenetic VariationMinisatellite RepeatsNerve Tissue ProteinsGenomic InstabilityPedigreeGenotypeTandem Repeat SequencesHaplotypesFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticSequence Analysis, DNANucleic Acid ConformationInverted Repeat SequencesAge of OnsetDNA, SatelliteCerebellar AtaxiaGenetic Predisposition to DiseaseModels, GeneticGenetic Diseases, InbornIntranuclear Inclusion BodiesPhenotypeChromosome FragilityDNA PrimersMuscular Dystrophy, OculopharyngealHeterozygoteChromosome MappingRNA-Binding ProteinsGenetics, PopulationGenetic LinkageAmyotrophic Lateral SclerosisGenome, HumanDNA RepairNuclear ProteinsNeurodegenerative DiseasesCase-Control StudiesProteinsExonsPeptidesEvolution, MolecularReceptors, AndrogenDNA, PlantDNA Mutational AnalysisGenes, DominantMice, TransgenicMutS Homolog 2 ProteinPhylogenyLinkage DisequilibriumGenetic LociExpressed Sequence TagsTranscription, GeneticDNA-Binding ProteinsDNA ReplicationRecombination, GeneticAmino Acid SequenceSaccharomyces cerevisiaePromoter Regions, GeneticMyoclonic Epilepsies, ProgressiveChromosomes, Human, XGenetic TestingRNA, MessengerRepetitive Sequences, Amino AcidSpecies SpecificityNucleic Acid HeteroduplexesX ChromosomeDisease Models, AnimalSequence Deletion