Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinIron-Binding ProteinsAllelesMutationRepetitive Sequences, Nucleic AcidGenetic Diseases, InbornMachado-Joseph DiseaseSpinocerebellar AtaxiasBase SequenceHeredodegenerative Disorders, Nervous SystemNerve Tissue ProteinsPedigreeMolecular Sequence DataMicrosatellite RepeatsGenomic InstabilityDNAFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticNucleic Acid ConformationInverted Repeat SequencesMinisatellite RepeatsAge of OnsetTandem Repeat SequencesCerebellar AtaxiaIntranuclear Inclusion BodiesPolymerase Chain ReactionChromosome FragilityMuscular Dystrophy, OculopharyngealRNA-Binding ProteinsPhenotypePolymorphism, GeneticGenetic MarkersModels, GeneticNuclear ProteinsChromosome MappingGenome, HumanAmyotrophic Lateral SclerosisProteinsGenetic LinkageDiseaseNeurodegenerative DiseasesSequence Analysis, DNAGenes, DominantPeptidesGenotypeDNA RepairMice, TransgenicHaplotypesReceptors, AndrogenExonsHeterozygoteDNA PrimersGene FrequencyRepetitive Sequences, Amino AcidDNA Mutational AnalysisAmino Acid SequenceDisease Models, AnimalChromosomes, Human, XTranscription, GeneticGenetic VariationDNA ReplicationMyoclonic Epilepsies, ProgressiveRNA, MessengerSaccharomyces cerevisiaeGenetic TestingDNA-Binding ProteinsMutS Homolog 2 ProteinNucleic Acid HeteroduplexesGenetic Predisposition to DiseaseDNA, Satellite