Trinucleotide Repeat ExpansionTrinucleotide RepeatsFragile X SyndromeFragile X Mental Retardation ProteinFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyHuntington DiseaseIron-Binding ProteinsAllelesAtaxiaMutationTremorRepetitive Sequences, Nucleic AcidSpinocerebellar AtaxiasMachado-Joseph DiseaseNerve Tissue ProteinsBase SequenceIntranuclear Inclusion BodiesHeredodegenerative Disorders, Nervous SystemPrimary Ovarian InsufficiencyHeterozygotePedigreeGenomic InstabilityMolecular Sequence DataDNAFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticMicrosatellite RepeatsRNA-Binding ProteinsNucleic Acid ConformationAge of OnsetInverted Repeat SequencesMinisatellite RepeatsTandem Repeat SequencesCerebellar AtaxiaPolymerase Chain ReactionChromosome FragilityMuscular Dystrophy, OculopharyngealGenetic Diseases, InbornPhenotypeAmyotrophic Lateral SclerosisPolymorphism, GeneticNeurodegenerative DiseasesNuclear ProteinsGene Knock-In TechniquesModels, GeneticPeptidesProteinsDNA RepairMice, TransgenicGenetic TestingGenotypeSequence Analysis, DNAReceptors, AndrogenRNA, MessengerDisease Models, AnimalChromosomes, Human, XGene FrequencyTranscription, GeneticDNA PrimersGenes, DominantMyoclonic Epilepsies, ProgressiveDNA ReplicationDNA Mutational AnalysisGenome, HumanHeterozygote DetectionMutS Homolog 2 ProteinGenetic MarkersRepetitive Sequences, Amino AcidExonsNucleic Acid HeteroduplexesSaccharomyces cerevisiaeMosaicism