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 DiseaseHeredodegenerative Disorders, Nervous SystemMolecular Sequence DataGenomic InstabilityNerve Tissue ProteinsDinucleotide RepeatsPolymorphism, GeneticDNAMinisatellite RepeatsGenetic MarkersFrontotemporal DementiaFlap EndonucleasesPedigreeAnticipation, GeneticTandem Repeat SequencesPolymerase Chain ReactionNucleic Acid ConformationInverted Repeat SequencesGenetic VariationDNA, SatelliteCerebellar AtaxiaAge of OnsetIntranuclear Inclusion BodiesSequence Analysis, DNAChromosome FragilityGenetic Diseases, InbornMuscular Dystrophy, OculopharyngealGenotypeRNA-Binding ProteinsModels, GeneticDNA PrimersAmyotrophic Lateral SclerosisPhenotypeChromosome MappingGene FrequencyHaplotypesNeurodegenerative DiseasesHeterozygoteGenetics, PopulationNuclear ProteinsDNA RepairGenome, HumanPeptidesProteinsGenetic LinkageReceptors, AndrogenMice, TransgenicMutS Homolog 2 ProteinEvolution, MolecularDNA, PlantGenes, DominantDNA ReplicationExonsTranscription, GeneticExpressed Sequence TagsSaccharomyces cerevisiaeMyoclonic Epilepsies, ProgressiveDNA-Binding ProteinsRecombination, GeneticRepetitive Sequences, Amino AcidChromosomes, Human, XNucleic Acid HeteroduplexesAmino Acid SequenceGenetic LociRNA, MessengerDNA Mutational AnalysisDisease Models, AnimalPhylogeny