Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsIron-Binding ProteinsAllelesRepetitive Sequences, Nucleic AcidMutationBase SequenceSpinocerebellar AtaxiasMachado-Joseph DiseaseMolecular Sequence DataHeredodegenerative Disorders, Nervous SystemNerve Tissue ProteinsGenomic InstabilityDinucleotide RepeatsPolymorphism, GeneticDNAMinisatellite RepeatsGenetic MarkersFrontotemporal DementiaFlap EndonucleasesPedigreeAnticipation, GeneticTandem Repeat SequencesPolymerase Chain ReactionNucleic Acid ConformationGenetic VariationInverted Repeat SequencesDNA, SatelliteCerebellar AtaxiaAge of OnsetSequence Analysis, DNAIntranuclear Inclusion BodiesChromosome FragilityGenetic Diseases, InbornMuscular Dystrophy, OculopharyngealGenotypeRNA-Binding ProteinsModels, GeneticDNA PrimersPhenotypeAmyotrophic Lateral SclerosisChromosome MappingHaplotypesGene FrequencyNeurodegenerative DiseasesHeterozygoteGenetics, PopulationNuclear ProteinsDNA RepairGenome, HumanPeptidesGenetic LinkageProteinsReceptors, AndrogenMice, TransgenicEvolution, MolecularMutS Homolog 2 ProteinGenes, DominantDNA, PlantDNA ReplicationExonsTranscription, GeneticExpressed Sequence TagsSaccharomyces cerevisiaeMyoclonic Epilepsies, ProgressiveDNA-Binding ProteinsDisease Models, AnimalRecombination, GeneticChromosomes, Human, XAmino Acid SequenceRepetitive Sequences, Amino AcidNucleic Acid HeteroduplexesPhylogenyRNA, MessengerGenetic LociDNA Mutational AnalysisSpecies Specificity