Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsAllelesIron-Binding ProteinsPolymorphism, GeneticRepetitive Sequences, Nucleic AcidMutationPolymorphism, Single NucleotideBase SequenceTandem Repeat SequencesMolecular Sequence DataSpinocerebellar AtaxiasMachado-Joseph DiseasePolymerase Chain ReactionMinisatellite RepeatsHeredodegenerative Disorders, Nervous SystemGenetic MarkersGene FrequencyDNAGenetic VariationDinucleotide RepeatsNerve Tissue ProteinsGenomic InstabilityPedigreeGenotypeHaplotypesSequence Analysis, DNAFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticNucleic Acid ConformationInverted Repeat SequencesDNA, SatelliteAge of OnsetCerebellar AtaxiaModels, GeneticGenetic Predisposition to DiseasePhenotypeGenetic Diseases, InbornDNA PrimersIntranuclear Inclusion BodiesChromosome FragilityChromosome MappingMuscular Dystrophy, OculopharyngealHeterozygoteRNA-Binding ProteinsGenetics, PopulationGenetic LinkageGenome, HumanAmyotrophic Lateral SclerosisNuclear ProteinsDNA RepairNeurodegenerative DiseasesCase-Control StudiesProteinsPeptidesExonsEvolution, MolecularAmino Acid SequenceDNA, PlantReceptors, AndrogenDNA Mutational AnalysisPhylogenyGenes, DominantMice, TransgenicTranscription, GeneticLinkage DisequilibriumMutS Homolog 2 ProteinGenetic LociDNA-Binding ProteinsExpressed Sequence TagsRecombination, GeneticDNA ReplicationRepetitive Sequences, Amino AcidPromoter Regions, GeneticSaccharomyces cerevisiaeRNA, MessengerSpecies SpecificityTandem Mass SpectrometryChromosomes, Human, XGenetic TestingMyoclonic Epilepsies, ProgressiveNucleic Acid HeteroduplexesX ChromosomeDisease Models, AnimalSequence Deletion