Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinAllelesIron-Binding ProteinsPolymorphism, GeneticMutationRepetitive Sequences, Nucleic AcidBase SequenceMolecular Sequence DataSpinocerebellar AtaxiasMachado-Joseph DiseaseGenotypeHeredodegenerative Disorders, Nervous SystemPolymerase Chain ReactionNerve Tissue ProteinsGenomic InstabilityFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticMicrosatellite RepeatsDNASequence Analysis, DNANucleic Acid ConformationGenetic VariationInverted Repeat SequencesMinisatellite RepeatsTandem Repeat SequencesPedigreeCerebellar AtaxiaAge of OnsetIntranuclear Inclusion BodiesHaplotypesModels, GeneticGenetic Predisposition to DiseaseGene FrequencyChromosome FragilityGenetic MarkersMuscular Dystrophy, OculopharyngealGenetic Diseases, InbornRNA-Binding ProteinsChromosome MappingGenetic LinkageAmino Acid SequenceAmyotrophic Lateral SclerosisNeurodegenerative DiseasesNuclear ProteinsMajor Histocompatibility ComplexPhenotypePeptidesProteinsDNA RepairPolymorphism, Single NucleotideGlutathione TransferaseReceptors, AndrogenMice, TransgenicSelection, GeneticDNA PrimersGenes, DominantMyoclonic Epilepsies, ProgressiveDNA ReplicationGenome, HumanTranscription, GeneticMutS Homolog 2 ProteinRepetitive Sequences, Amino AcidHeterozygoteExonsNucleic Acid HeteroduplexesSaccharomyces cerevisiaeDNA-Binding ProteinsRNA, MessengerDisease Models, Animal