Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsAllelesIron-Binding ProteinsPolymorphism, GeneticMutationTandem Repeat SequencesPolymorphism, Single NucleotideRepetitive Sequences, Nucleic AcidBase SequenceGenetic MarkersSpinocerebellar AtaxiasPolymerase Chain ReactionMachado-Joseph DiseaseMolecular Sequence DataGene FrequencyGenetic VariationHaplotypesDNAHeredodegenerative Disorders, Nervous SystemGenotypeDinucleotide RepeatsMinisatellite RepeatsNerve Tissue ProteinsGenomic InstabilityPedigreeFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticSequence Analysis, DNAGenetics, PopulationNucleic Acid ConformationInverted Repeat SequencesChromosomes, Human, YAge of OnsetDNA, SatelliteCerebellar AtaxiaGenetic Predisposition to DiseaseModels, GeneticGenetic Diseases, InbornIntranuclear Inclusion BodiesPhenotypeGenome, HumanChromosome FragilityDNA PrimersMuscular Dystrophy, OculopharyngealHeterozygoteChromosome MappingRNA-Binding ProteinsForensic GeneticsGenetic LinkageAmyotrophic Lateral SclerosisDNA RepairNuclear ProteinsNeurodegenerative DiseasesCase-Control StudiesProteinsExonsPeptidesEvolution, MolecularReceptors, AndrogenDNA, PlantDNA Mutational AnalysisGenes, DominantMice, TransgenicY ChromosomeMutS 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