Friedreich AtaxiaTrinucleotide Repeat ExpansionIron-Binding ProteinsTrinucleotide RepeatsDNA Repeat ExpansionMyotonic DystrophySpinocerebellar DegenerationsFragile X SyndromeFragile X Mental Retardation ProteinHuntington DiseaseTripletsAllelesRepetitive Sequences, Nucleic AcidHeredodegenerative Disorders, Nervous SystemBase SequenceMutationMolecular Sequence DataSpinocerebellar AtaxiasNucleic Acid ConformationDNAIntronsNerve Tissue ProteinsAnticipation, GeneticGenomic InstabilityMachado-Joseph DiseaseFlap EndonucleasesTandem Repeat SequencesMicrosatellite RepeatsMinisatellite RepeatsGenetic Diseases, InbornRNA-Binding ProteinsPedigreeInverted Repeat SequencesPolymerase Chain ReactionFrontotemporal DementiaExonsPolymorphism, GeneticAge of OnsetModels, GeneticCerebellar AtaxiaChromosome FragilityNeurodegenerative DiseasesSequence Analysis, DNAIntranuclear Inclusion BodiesNuclear ProteinsPhenotypeMuscular Dystrophy, OculopharyngealTranscription, GeneticAmino Acid SequenceDNA PrimersDNA RepairRNA, MessengerPeptidesSaccharomyces cerevisiaeAmyotrophic Lateral SclerosisPregnancy, TripletGenome, HumanDNA ReplicationRepetitive Sequences, Amino AcidProteinsSequence DeletionNucleic Acid Heteroduplexes