Trinucleotide Repeat ExpansionTrinucleotide RepeatsMicrosatellite RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinDNA, SatelliteAllelesPolymorphism, GeneticIron-Binding ProteinsGenetic MarkersBase SequenceMolecular Sequence DataGenetic VariationDNA PrimersPolymerase Chain ReactionRepetitive Sequences, Nucleic AcidMutationSpinocerebellar AtaxiasMachado-Joseph DiseaseHeredodegenerative Disorders, Nervous SystemNerve Tissue ProteinsGenomic InstabilityDinucleotide RepeatsDNAMinisatellite RepeatsFrontotemporal DementiaFlap EndonucleasesPedigreeAnticipation, GeneticTandem Repeat SequencesNucleic Acid ConformationInverted Repeat SequencesCerebellar AtaxiaAge of OnsetSequence Analysis, DNAIntranuclear Inclusion BodiesChromosome FragilityGenetic Diseases, InbornMuscular Dystrophy, OculopharyngealGenotypeRNA-Binding ProteinsModels, GeneticPhenotypeAmyotrophic 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