Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsIron-Binding ProteinsAllelesMutationRepetitive Sequences, Nucleic AcidBase SequenceMolecular Sequence DataTandem Repeat SequencesSpinocerebellar AtaxiasMachado-Joseph DiseaseDNANucleotidesPolymorphism, GeneticHeredodegenerative Disorders, Nervous SystemGenetic MarkersMinisatellite RepeatsPolymerase Chain ReactionGenetic VariationNerve Tissue ProteinsGenomic InstabilityPedigreeDinucleotide RepeatsNucleic Acid ConformationSequence Analysis, DNAGenetic LociFlap EndonucleasesFrontotemporal DementiaChromosome MappingAnticipation, GeneticGenotypeInverted Repeat SequencesDNA, SatelliteModels, GeneticAge of OnsetCerebellar AtaxiaDNA PrimersGenetic Diseases, InbornPhenotypeIntranuclear Inclusion BodiesAmino Acid SequenceChromosome FragilityGenetic LinkageRNA-Binding ProteinsMuscular Dystrophy, OculopharyngealGene FrequencyPolymorphism, Single NucleotideGenetics, PopulationHaplotypesHeterozygoteDNA RepairGenome, HumanNuclear ProteinsAmyotrophic Lateral SclerosisTranscription, GeneticProteinsNeurodegenerative DiseasesEvolution, MolecularPeptidesPhylogenyExonsRecombination, GeneticDNA, PlantRNA, MessengerGenes, DominantDNA ReplicationDNA-Binding ProteinsMice, TransgenicSaccharomyces cerevisiaeReceptors, AndrogenCloning, MolecularQuantitative Trait LociSpecies SpecificityDNA Mutational AnalysisMutS Homolog 2 ProteinExpressed Sequence TagsRepetitive Sequences, Amino AcidCell LineChromosomes, Human, XNucleic Acid HeteroduplexesTandem Mass SpectrometryRNAMyoclonic Epilepsies, ProgressivePromoter Regions, GeneticSequence DeletionX ChromosomeSequence Homology, Nucleic AcidDisease Models, AnimalSaccharomyces cerevisiae ProteinsGenetic Predisposition to DiseaseOligodeoxyribonucleotidesGenetic Testing