Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsIron-Binding ProteinsAllelesMutationRepetitive Sequences, Nucleic AcidBase SequenceSpinocerebellar AtaxiasPoint MutationMolecular Sequence DataMachado-Joseph DiseasePedigreeHeredodegenerative Disorders, Nervous SystemPolymerase Chain ReactionDNAPolymorphism, GeneticNerve Tissue ProteinsGenomic InstabilityDinucleotide RepeatsMutation, MissenseGenetic MarkersMinisatellite RepeatsFrontotemporal DementiaFlap EndonucleasesTandem Repeat SequencesAnticipation, GeneticGenetic VariationSequence Analysis, DNANucleic Acid ConformationGenotypeAge of OnsetInverted Repeat SequencesDNA, SatelliteCerebellar AtaxiaHeterozygoteGenetic Diseases, InbornModels, GeneticIntranuclear Inclusion BodiesDNA PrimersChromosome FragilityMuscular Dystrophy, OculopharyngealPhenotypeRNA-Binding ProteinsChromosome MappingGene FrequencyExonsNuclear ProteinsAmyotrophic Lateral SclerosisFrameshift MutationGenetic LinkageDNA RepairGenetics, PopulationNeurodegenerative DiseasesProteinsGenes, DominantHaplotypesDNA Mutational AnalysisGenome, HumanPeptidesAmino Acid SequenceMice, TransgenicDNA-Binding ProteinsSaccharomyces cerevisiaeEvolution, MolecularTranscription, GeneticSize PerceptionReceptors, AndrogenDNA ReplicationGenetic TestingRecombination, GeneticSequence DeletionDNA, PlantRNA, MessengerGerm-Line MutationCell LineChromosomes, Human, XMyoclonic Epilepsies, ProgressiveExpressed Sequence TagsDisease Models, AnimalFounder EffectNucleic Acid HeteroduplexesSaccharomyces cerevisiae ProteinsRepetitive Sequences, Amino AcidPhylogenyGenetic LociX ChromosomeMutation RateTranscription FactorsAtaxiaSpecies SpecificityPromoter Regions, Genetic