Trinucleotide RepeatsTrinucleotide Repeat ExpansionFriedreich AtaxiaFragile X SyndromeMyotonic DystrophySpinocerebellar DegenerationsHuntington DiseaseFragile X Mental Retardation ProteinRepetitive Sequences, Nucleic AcidBase SequenceMachado-Joseph DiseaseAllelesMolecular Sequence DataMicrosatellite RepeatsHeredodegenerative Disorders, Nervous SystemNucleic Acid ConformationGenomic InstabilityDNAMinisatellite RepeatsNerve Tissue ProteinsTandem Repeat SequencesInverted Repeat SequencesSpinocerebellar AtaxiasFlap EndonucleasesAnticipation, GeneticIron-Binding ProteinsChromosome FragilityMutationPolymerase Chain ReactionGenetic Diseases, InbornPolymorphism, GeneticRNA-Binding ProteinsIntranuclear Inclusion BodiesPedigreeCerebellar AtaxiaAge of OnsetMuscular Dystrophy, OculopharyngealNeurodegenerative DiseasesReceptors, AndrogenDNA RepairNuclear ProteinsSequence Analysis, DNANucleic Acid HeteroduplexesModels, GeneticPeptidesTranscription, GeneticChromosomes, Human, XDNA ReplicationSaccharomyces cerevisiaeDNA PrimersPhenotypeDNA, SatelliteDinucleotide RepeatsAmino Acid SequenceGenome, HumanOligodeoxyribonucleotidesChromosome MappingGenotypeGenetic MarkersNucleic Acid DenaturationMutS Homolog 2 ProteinSequence DeletionGene FrequencyMice, TransgenicSaccharomyces cerevisiae ProteinsExonsEndodeoxyribonucleasesRNA, MessengerX ChromosomeNervous System DiseasesDNA-Binding ProteinsHeterozygoteGenes, DominantGenetic VariationCell LineRNARecombination, GeneticBlotting, SouthernAnkyrin RepeatDNA, FungalProteinsPoint MutationIntellectual DisabilityDisease Models, AnimalRepetitive Sequences, Amino AcidOligonucleotidesDNA Mutational AnalysisProtein-Serine-Threonine KinasesPromoter Regions, GeneticGenetic TestingDNA, ComplementaryTranscription FactorsGene ExpressionGenetic LinkageHaplotypesBrain