Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinIron-Binding ProteinsAllelesMutationRepetitive Sequences, Nucleic AcidBase SequenceSpinocerebellar AtaxiasMachado-Joseph DiseaseMolecular Sequence DataHeredodegenerative Disorders, Nervous SystemNerve Tissue ProteinsGenomic InstabilityDNAFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticMicrosatellite RepeatsNucleic Acid ConformationInverted Repeat SequencesMinisatellite RepeatsTandem Repeat SequencesPedigreeCerebellar AtaxiaAge of OnsetIntranuclear Inclusion BodiesChromosome FragilityMuscular Dystrophy, OculopharyngealPolymerase Chain ReactionRNA-Binding ProteinsGenetic Diseases, InbornAmino Acid SequenceAmyotrophic Lateral SclerosisPolymorphism, GeneticNuclear ProteinsNeurodegenerative DiseasesProteinsPeptidesSequence Analysis, DNAPhenotypeDNA RepairSequence Homology, Amino AcidModels, GeneticReceptors, AndrogenMice, TransgenicDNA PrimersSequence Homology, Nucleic AcidTranscription, GeneticGenotypeSaccharomyces cerevisiaeDNA ReplicationRNA, MessengerGenes, DominantGenome, HumanDNA-Binding ProteinsMyoclonic Epilepsies, ProgressiveExonsRepetitive Sequences, Amino AcidGenetic MarkersMutS Homolog 2 ProteinNucleic Acid HeteroduplexesHeterozygoteDisease Models, AnimalCell LineSaccharomyces cerevisiae Proteins