Trinucleotide Repeat ExpansionTrinucleotide RepeatsHuntington DiseaseFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeFragile X Mental Retardation ProteinMicrosatellite RepeatsIron-Binding ProteinsAllelesMutationRepetitive Sequences, Nucleic AcidTandem Repeat SequencesBase SequenceNerve Tissue ProteinsSpinocerebellar AtaxiasMachado-Joseph DiseaseMolecular Sequence DataHeredodegenerative Disorders, Nervous SystemGenetic MarkersMinisatellite RepeatsDNAPedigreeGenomic InstabilityPolymorphism, GeneticDinucleotide RepeatsAge of OnsetPolymerase Chain ReactionFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticNucleic Acid ConformationGenetic VariationInverted Repeat SequencesNuclear ProteinsDNA, SatelliteGenetic Diseases, InbornGenotypeCerebellar AtaxiaNeurodegenerative DiseasesSequence Analysis, DNAIntranuclear Inclusion BodiesChromosome FragilityModels, GeneticMuscular Dystrophy, OculopharyngealPhenotypeRNA-Binding ProteinsChromosome MappingPeptidesHeterozygoteGene FrequencyDNA PrimersMice, TransgenicHaplotypesGenetic LinkageAmyotrophic Lateral SclerosisGenetics, PopulationProteinsDNA RepairDisease Models, AnimalGenome, HumanGenetic TestingChromosomes, Human, Pair 4Receptors, AndrogenExonsAmino Acid SequenceBrainEvolution, MolecularMutS Homolog 2 ProteinDNA, PlantDNA ReplicationGenes, DominantTranscription, GeneticRepetitive Sequences, Amino AcidSaccharomyces cerevisiaeExpressed Sequence TagsDNA-Binding ProteinsMyoclonic Epilepsies, ProgressiveRecombination, GeneticTandem Mass SpectrometryChromosomes, Human, XGene Knock-In TechniquesPhylogenyNucleic Acid HeteroduplexesRNA, MessengerGenetic LociDNA Mutational AnalysisCell Line