Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsIron-Binding ProteinsAllelesRepetitive Sequences, Nucleic AcidMutationBase SequenceMolecular Sequence DataSpinocerebellar AtaxiasMachado-Joseph DiseaseTandem Repeat SequencesHeredodegenerative Disorders, Nervous SystemDNADNA, SatellitePolymorphism, GeneticGenomic InstabilityNerve Tissue ProteinsDinucleotide RepeatsGenetic MarkersMinisatellite RepeatsPolymerase Chain ReactionFrontotemporal DementiaFlap EndonucleasesPedigreeAnticipation, GeneticNucleic Acid ConformationGenetic VariationInverted Repeat SequencesSequence Analysis, DNACerebellar AtaxiaAge of OnsetIntranuclear Inclusion BodiesChromosome FragilityGenetic Diseases, InbornMuscular Dystrophy, OculopharyngealModels, GeneticGenotypeRNA-Binding ProteinsChromosome MappingDNA PrimersPhenotypeAmyotrophic Lateral SclerosisNuclear ProteinsGene FrequencyHaplotypesGenome, HumanNeurodegenerative DiseasesHeterozygoteGenetics, PopulationGenetic LinkageDNA RepairPeptidesAmino Acid SequenceProteinsEvolution, MolecularTranscription, GeneticDNA, PlantReceptors, AndrogenExonsRepetitive Sequences, Amino AcidMice, TransgenicRecombination, GeneticDNA ReplicationSaccharomyces cerevisiaeMutS Homolog 2 ProteinGenes, DominantDNA-Binding ProteinsRNA, MessengerPhylogenyExpressed Sequence TagsMyoclonic Epilepsies, ProgressiveChromosomes, Human, XSpecies SpecificityDNA Mutational AnalysisNucleic Acid HeteroduplexesGenetic LociX ChromosomeDisease Models, Animal