Trinucleotide Repeat ExpansionTrinucleotide RepeatsMicrosatellite RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinIron-Binding ProteinsAllelesMutationRepetitive Sequences, Nucleic AcidBase SequenceSpinocerebellar AtaxiasMachado-Joseph DiseaseHeredodegenerative Disorders, Nervous SystemMolecular Sequence DataNerve Tissue ProteinsGenomic InstabilityPolymorphism, GeneticDinucleotide RepeatsDNAPedigreeGenetic MarkersMinisatellite RepeatsFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticTandem Repeat SequencesPolymerase Chain ReactionNucleic Acid ConformationGenetic VariationInverted Repeat SequencesAge of OnsetDNA, SatelliteCerebellar AtaxiaGenetic Diseases, InbornIntranuclear Inclusion BodiesSequence Analysis, DNAChromosome FragilityMuscular Dystrophy, OculopharyngealGenotypeRNA-Binding ProteinsModels, GeneticPhenotypeDNA PrimersAmyotrophic Lateral SclerosisNeurodegenerative DiseasesChromosome MappingHaplotypesGene FrequencyHeterozygoteNuclear ProteinsGenetics, PopulationDNA RepairGenome, HumanGenetic LinkageProteinsPeptidesReceptors, AndrogenMice, TransgenicBipolar DisorderGenes, DominantMutS Homolog 2 ProteinEvolution, MolecularExonsDNA, PlantDNA ReplicationTranscription, GeneticMyoclonic Epilepsies, ProgressiveExpressed Sequence TagsDisease Models, AnimalSaccharomyces cerevisiaeDNA-Binding ProteinsChromosomes, Human, XDNA Mutational AnalysisRecombination, GeneticAmino Acid SequenceRepetitive Sequences, Amino AcidRNA, MessengerMental DisordersNucleic Acid HeteroduplexesGenetic LociBrain