Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile 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 ConformationSeverity of Illness IndexAge of OnsetInverted Repeat SequencesMinisatellite RepeatsTandem Repeat SequencesCerebellar AtaxiaIntranuclear Inclusion BodiesPolymerase Chain ReactionChromosome FragilityMuscular Dystrophy, OculopharyngealPhenotypeRNA-Binding ProteinsPolymorphism, GeneticGenetic MarkersModels, GeneticNuclear ProteinsChromosome MappingAmyotrophic Lateral SclerosisGenetic LinkageGenome, HumanProteinsDiseaseNeurodegenerative DiseasesGenes, DominantSequence Analysis, DNAGenotypePeptidesDNA RepairHaplotypesMice, TransgenicReceptors, AndrogenHeterozygoteExonsDNA PrimersGene FrequencyDisease Models, AnimalDNA Mutational AnalysisRepetitive Sequences, Amino AcidChromosomes, Human, XAmino Acid SequenceTranscription, GeneticGenetic VariationMyoclonic Epilepsies, ProgressiveDNA ReplicationGenetic TestingRNA, MessengerSaccharomyces cerevisiaeGenetic Predisposition to DiseaseDNA-Binding ProteinsMutS Homolog 2 ProteinNucleic Acid HeteroduplexesDNA, Satellite