Trinucleotide Repeat ExpansionTrinucleotide RepeatsFragile X SyndromeFragile X Mental Retardation ProteinFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyHuntington DiseaseIron-Binding ProteinsAllelesAtaxiaMutationTremorRepetitive Sequences, Nucleic AcidSpinocerebellar AtaxiasMachado-Joseph DiseaseBase SequenceNerve Tissue ProteinsIntranuclear Inclusion BodiesHeredodegenerative Disorders, Nervous SystemPrimary Ovarian InsufficiencyHeterozygoteMolecular Sequence DataPedigreeDNAGenomic InstabilityRNA-Binding ProteinsFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticMicrosatellite RepeatsNucleic Acid ConformationInverted Repeat SequencesAge of OnsetMinisatellite RepeatsTandem Repeat SequencesPolymerase Chain ReactionCerebellar AtaxiaChromosome FragilityMuscular Dystrophy, OculopharyngealGenetic Diseases, InbornPhenotypeAmyotrophic Lateral SclerosisPolymorphism, GeneticNuclear ProteinsNeurodegenerative DiseasesModels, GeneticGene Knock-In TechniquesProteinsRNA, MessengerTranscription, GeneticMice, TransgenicPeptidesDNA RepairGenetic TestingSequence Analysis, DNAGenotypeReceptors, AndrogenDNA PrimersDisease Models, AnimalChromosomes, Human, XAmino Acid SequenceGene FrequencyExonsGenes, DominantDNA Mutational AnalysisDNA ReplicationGenome, HumanDNA-Binding ProteinsMyoclonic Epilepsies, ProgressiveHeterozygote DetectionSaccharomyces cerevisiaeBrainMutS Homolog 2 ProteinGenetic MarkersRepetitive Sequences, Amino AcidNucleic Acid HeteroduplexesMosaicismCell Line