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 InstabilityPolymorphism, GeneticDinucleotide RepeatsDNAGenetic MarkersMinisatellite RepeatsFrontotemporal DementiaFlap EndonucleasesPedigreeAnticipation, GeneticPolymerase Chain ReactionTandem Repeat SequencesNucleic Acid ConformationGenetic VariationInverted Repeat SequencesDNA, SatelliteCerebellar AtaxiaAge of OnsetSequence Analysis, DNAIntranuclear Inclusion BodiesChromosome FragilityGenetic Diseases, InbornMuscular Dystrophy, OculopharyngealGenotypeRNA-Binding ProteinsModels, GeneticDNA PrimersAmyotrophic Lateral SclerosisPhenotypeChromosome MappingGene FrequencyHaplotypesNeurodegenerative DiseasesHeterozygoteGenetics, PopulationNuclear ProteinsDNA RepairGenome, HumanPeptidesGenetic LinkageProteinsReceptors, AndrogenMice, TransgenicEvolution, MolecularMutS Homolog 2 ProteinDNA, PlantGenes, DominantDNA ReplicationExonsTranscription, GeneticSaccharomyces cerevisiaeExpressed Sequence TagsMyoclonic Epilepsies, ProgressiveAmino Acid SequenceRecombination, GeneticDNA-Binding ProteinsRepetitive Sequences, Amino AcidChromosomes, Human, XNucleic Acid HeteroduplexesRNA, MessengerPhylogenyGenetic LociDisease Models, AnimalDNA Mutational Analysis