Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyHuntington DiseaseFragile X SyndromeFragile X Mental Retardation ProteinMicrosatellite RepeatsIron-Binding ProteinsAllelesSpinocerebellar AtaxiasHeredodegenerative Disorders, Nervous SystemMutationMachado-Joseph DiseaseRepetitive Sequences, Nucleic AcidNerve Tissue ProteinsPeptidesTandem Repeat SequencesBase SequenceMolecular Sequence DataIntranuclear Inclusion BodiesNeurodegenerative DiseasesNuclear ProteinsMinisatellite RepeatsPolymorphism, GeneticGenomic InstabilityDinucleotide RepeatsDNAGenetic MarkersPedigreeFrontotemporal DementiaFlap EndonucleasesPolymerase Chain ReactionAnticipation, GeneticNucleic Acid ConformationGenetic VariationCerebellar AtaxiaInverted Repeat SequencesDNA, SatelliteAge of OnsetSequence Analysis, DNAMyoclonic Epilepsies, ProgressiveChromosome FragilityGenetic Diseases, InbornMuscular Dystrophy, OculopharyngealGenotypeRNA-Binding ProteinsReceptors, AndrogenModels, GeneticInclusion BodiesPhenotypeDNA PrimersAmyotrophic Lateral SclerosisMice, TransgenicChromosome MappingProteinsGene FrequencyHaplotypesRepetitive Sequences, Amino AcidGenetics, PopulationHeterozygoteDNA RepairAmino Acid SequenceGenome, HumanDisease Models, AnimalMuscular Disorders, AtrophicExonsGenetic LinkageTranscription, GeneticSaccharomyces cerevisiaeGenes, DominantEvolution, MolecularCell LineMutS Homolog 2 ProteinDNA-Binding ProteinsDNA, PlantDNA ReplicationBrainRNA, MessengerExpressed Sequence TagsSaccharomyces cerevisiae ProteinsRecombination, GeneticTandem Mass SpectrometryChromosomes, Human, XPhylogenyNucleic Acid HeteroduplexesGenetic LociAtaxiaDNA Mutational AnalysisSequence DeletionMuscular Atrophy, Spinal