Trinucleotide Repeat ExpansionFriedreich AtaxiaTrinucleotide RepeatsDNA Repeat ExpansionIron-Binding ProteinsSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinAllelesMutationRepetitive Sequences, Nucleic AcidBase SequenceSpinocerebellar AtaxiasMolecular Sequence DataMachado-Joseph DiseaseHeredodegenerative Disorders, Nervous SystemNerve Tissue ProteinsDNAGenomic InstabilityFrontotemporal DementiaFlap EndonucleasesMicrosatellite RepeatsAnticipation, GeneticNucleic Acid ConformationInverted Repeat SequencesPedigreeTandem Repeat SequencesMinisatellite RepeatsAge of OnsetCerebellar AtaxiaIntranuclear Inclusion BodiesPolymerase Chain ReactionChromosome FragilityMuscular Dystrophy, OculopharyngealRNA-Binding ProteinsGenetic Diseases, InbornPhenotypePolymorphism, GeneticChromosomes, Human, Pair 9AtaxiaSculptureAmyotrophic Lateral SclerosisNuclear ProteinsNeurodegenerative DiseasesSequence Analysis, DNARNA, MessengerProteinsReflex, BabinskiPeptidesAmino Acid SequenceTranscription, GeneticDNA RepairMice, TransgenicModels, GeneticGenetic LinkageDNA PrimersMedicine in ArtReceptors, AndrogenDisease Models, AnimalGenotypeIron-Sulfur ProteinsChromosome MappingIntronsExonsAconitate HydrataseDNA-Binding ProteinsIronGenes, DominantCell LineDNA ReplicationSaccharomyces cerevisiaeGenome, HumanPhosphotransferases (Alcohol Group Acceptor)Myoclonic Epilepsies, ProgressiveHeterozygoteGenetic MarkersRepetitive Sequences, Amino AcidGenetic VariationMutS Homolog 2 ProteinNucleic Acid HeteroduplexesPoint MutationGene Frequency