Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsAllelesIron-Binding ProteinsPolymorphism, GeneticMutationRepetitive Sequences, Nucleic AcidGenetic MarkersPolymorphism, Single NucleotideBase SequenceSpinocerebellar AtaxiasMolecular Sequence DataMachado-Joseph DiseasePolymerase Chain ReactionHeredodegenerative Disorders, Nervous SystemGene FrequencyGenetic VariationDNADinucleotide RepeatsMinisatellite RepeatsNerve Tissue ProteinsGenomic InstabilityPedigreeGenotypeHaplotypesTandem Repeat SequencesSequence Analysis, DNAFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticNucleic Acid ConformationInverted Repeat SequencesDNA, SatelliteAge of OnsetPhenotypeGenetic Predisposition to DiseaseModels, GeneticCerebellar AtaxiaChromosome MappingDNA PrimersGenetic Diseases, InbornIntranuclear Inclusion BodiesChromosome FragilityHeterozygoteMuscular Dystrophy, OculopharyngealGenetics, PopulationRNA-Binding ProteinsGenetic LinkageGenome, HumanAmyotrophic Lateral SclerosisNuclear ProteinsDNA RepairCase-Control StudiesNeurodegenerative DiseasesProteinsExonsPeptidesBiological MarkersDNA, PlantEvolution, MolecularReceptors, AndrogenDNA Mutational AnalysisMice, TransgenicGenes, DominantPhylogenyLinkage DisequilibriumGenetic LociExpressed Sequence TagsMutS Homolog 2 ProteinRecombination, GeneticDNA-Binding ProteinsTranscription, GeneticAmino Acid SequenceDNA ReplicationRNA, MessengerPromoter Regions, GeneticGenetic TestingSaccharomyces cerevisiaeSpecies SpecificityChromosomes, Human, XMyoclonic Epilepsies, ProgressiveRepetitive Sequences, Amino AcidNucleic Acid HeteroduplexesDisease Models, AnimalX ChromosomeSequence DeletionCell Line