Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinIron-Binding ProteinsAllelesMutationBase SequenceRepetitive Sequences, Nucleic AcidMolecular Sequence DataSpinocerebellar AtaxiasPoint MutationMachado-Joseph DiseasePedigreeHeredodegenerative Disorders, Nervous SystemNerve Tissue ProteinsDNAMutation, MissenseGenomic InstabilityMicrosatellite RepeatsPolymerase Chain ReactionFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticNucleic Acid ConformationTandem Repeat SequencesAge of OnsetInverted Repeat SequencesMinisatellite RepeatsCerebellar AtaxiaIntranuclear Inclusion BodiesSequence Analysis, DNAGenetic Diseases, InbornChromosome FragilityRNA-Binding ProteinsPolymorphism, GeneticMuscular Dystrophy, OculopharyngealAmino Acid SequencePhenotypeNuclear ProteinsExonsGenotypeHeterozygoteAmyotrophic Lateral SclerosisProteinsDNA PrimersTranscription, GeneticNeurodegenerative DiseasesModels, GeneticDNA RepairGenes, DominantPeptidesMice, TransgenicDNA Mutational AnalysisFrameshift MutationRNA, MessengerDNA-Binding ProteinsSaccharomyces cerevisiaeReceptors, AndrogenChromosome MappingGenetic VariationCell LineDNA ReplicationGenetic MarkersGene FrequencySequence DeletionGenome, HumanPromoter Regions, GeneticGenetic TestingMutS Homolog 2 ProteinGerm-Line MutationTranscription FactorsSaccharomyces cerevisiae ProteinsDisease Models, AnimalMyoclonic Epilepsies, ProgressiveRecombination, GeneticRepetitive Sequences, Amino AcidCloning, MolecularNucleic Acid HeteroduplexesGenetic LinkageRNAAtaxiaGene ExpressionChromosomes, Human, XOligodeoxyribonucleotides