Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinIron-Binding ProteinsAllelesMutationRepetitive Sequences, Nucleic AcidSpinocerebellar AtaxiasMachado-Joseph DiseaseBase SequenceHeredodegenerative Disorders, Nervous SystemNerve Tissue ProteinsGenomic InstabilityMolecular Sequence DataFrontotemporal DementiaFlap EndonucleasesMicrosatellite RepeatsAnticipation, GeneticDNANucleic Acid ConformationInverted Repeat SequencesMinisatellite RepeatsTandem Repeat SequencesPedigreeCerebellar AtaxiaAge of OnsetIntranuclear Inclusion BodiesChromosome FragilityMuscular Dystrophy, OculopharyngealGenetic Diseases, InbornPolymerase Chain ReactionRNA-Binding ProteinsAmyotrophic Lateral SclerosisPolymorphism, GeneticNeurodegenerative DiseasesNuclear ProteinsPhenotypePeptidesProteinsDNA RepairMice, TransgenicSequence Analysis, DNAModels, GeneticReceptors, AndrogenDNA PrimersGenotypeMyoclonic Epilepsies, ProgressiveGenes, DominantDNA ReplicationGenome, HumanTranscription, GeneticGenetic MarkersMutS Homolog 2 ProteinRepetitive Sequences, Amino AcidHeterozygoteDisease Models, AnimalExonsSaccharomyces cerevisiaeDNA-Binding ProteinsRNA, MessengerNucleic Acid HeteroduplexesAmino Acid SequenceGenetic VariationGene Frequency