Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionAge of OnsetSpinocerebellar DegenerationsMyotonic DystrophyOxazolesFragile 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 InstabilityFrontotemporal DementiaDNAFlap EndonucleasesAnticipation, GeneticNucleic Acid ConformationInverted Repeat SequencesMinisatellite RepeatsTandem Repeat SequencesCerebellar AtaxiaIntranuclear Inclusion BodiesChromosome FragilityPolymerase Chain ReactionMuscular Dystrophy, OculopharyngealRNA-Binding ProteinsPhenotypePolymorphism, GeneticGenetic MarkersModels, GeneticNuclear ProteinsAmyotrophic Lateral SclerosisChromosome MappingGenetic LinkageGenome, HumanProteinsNeurodegenerative DiseasesDiseaseGenes, DominantSequence Analysis, DNAPeptidesGenotypeDNA RepairMice, TransgenicHaplotypesReceptors, AndrogenHeterozygoteExonsDNA PrimersGene FrequencyDNA Mutational AnalysisRepetitive Sequences, Amino AcidDisease Models, AnimalAmino Acid SequenceTranscription, GeneticChromosomes, Human, XDNA ReplicationMyoclonic Epilepsies, ProgressiveGenetic TestingSaccharomyces cerevisiaeGenetic VariationRNA, MessengerDNA-Binding ProteinsMutS Homolog 2 ProteinGenetic Predisposition to DiseaseNucleic Acid HeteroduplexesDNA, Satellite