Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsIron-Binding ProteinsAllelesMutationRepetitive Sequences, Nucleic AcidBase SequenceTandem Repeat SequencesMolecular Sequence DataPoint MutationSpinocerebellar AtaxiasPedigreeMachado-Joseph DiseaseHeredodegenerative Disorders, Nervous SystemPolymerase Chain ReactionPolymorphism, GeneticDNANerve Tissue ProteinsMinisatellite RepeatsGenomic InstabilityGenetic MarkersMutation, MissenseDinucleotide RepeatsFrontotemporal DementiaGenetic VariationSequence Analysis, DNAFlap EndonucleasesAnticipation, GeneticNucleic Acid ConformationGenotypeAge of OnsetInverted Repeat SequencesDNA, SatelliteHeterozygoteCerebellar AtaxiaGenetic Diseases, InbornModels, GeneticPhenotypeDNA PrimersChromosome MappingIntranuclear Inclusion BodiesChromosome FragilityRNA-Binding ProteinsMuscular Dystrophy, OculopharyngealExonsGene FrequencyNuclear ProteinsGenetic LinkageFrameshift MutationAmyotrophic Lateral SclerosisAmino Acid SequenceNeurodegenerative DiseasesDNA RepairProteinsGenetics, PopulationHaplotypesDNA Mutational AnalysisGenes, DominantGenome, HumanPeptidesMice, TransgenicEvolution, MolecularDNA-Binding ProteinsTranscription, GeneticSaccharomyces cerevisiaeGenetic TestingReceptors, AndrogenMutS Homolog 2 ProteinDNA ReplicationRecombination, GeneticSequence DeletionRNA, MessengerCell LineDNA, PlantBipolar DisorderDisease Models, AnimalRepetitive Sequences, Amino AcidGerm-Line MutationChromosomes, Human, XPhylogenyMyoclonic Epilepsies, ProgressiveExpressed Sequence TagsSaccharomyces cerevisiae ProteinsFounder EffectGenetic LociX ChromosomeTandem Mass SpectrometryNucleic Acid HeteroduplexesBrainTranscription FactorsGenetic Predisposition to DiseaseMutation Rate