Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionFragile X SyndromeSpinocerebellar DegenerationsMyotonic DystrophyFragile X Mental Retardation ProteinHuntington DiseaseIron-Binding ProteinsAllelesMutationRepetitive Sequences, Nucleic AcidSpinocerebellar AtaxiasMachado-Joseph DiseaseBase SequencePedigreeHeredodegenerative Disorders, Nervous SystemNerve Tissue ProteinsMolecular Sequence DataInheritance PatternsGenomic InstabilityMicrosatellite RepeatsAnticipation, GeneticDNAFrontotemporal DementiaFlap EndonucleasesNucleic Acid ConformationInverted Repeat SequencesMinisatellite RepeatsAge of OnsetTandem Repeat SequencesCerebellar AtaxiaRNA-Binding ProteinsGenetic Diseases, InbornIntranuclear Inclusion BodiesChromosome FragilityPolymerase Chain ReactionMuscular Dystrophy, OculopharyngealPhenotypePolymorphism, GeneticGenes, DominantModels, GeneticAmyotrophic Lateral SclerosisNuclear ProteinsNeurodegenerative DiseasesGenotypeSequence Analysis, DNAProteinsPeptidesHeterozygoteDNA RepairGenetic MarkersMice, TransgenicReceptors, AndrogenGenetic LinkageAtaxiaDNA PrimersGenome, HumanDNA ReplicationExonsSaccharomyces cerevisiaeTranscription, GeneticChromosome MappingGene FrequencyGenetic VariationDisease Models, AnimalMyoclonic Epilepsies, ProgressiveRNA, MessengerAmino Acid SequenceDNA-Binding ProteinsHaplotypesChromosomes, Human, XMutS Homolog 2 ProteinDNA Mutational AnalysisRepetitive Sequences, Amino AcidNucleic Acid HeteroduplexesSaccharomyces cerevisiae Proteins