Trinucleotide Repeat ExpansionTrinucleotide RepeatsCodon, TerminatorFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsCodonAllelesIron-Binding ProteinsPolymorphism, GeneticMutationBase SequenceRepetitive Sequences, Nucleic AcidPolymorphism, Single NucleotideMolecular Sequence DataSpinocerebellar AtaxiasMachado-Joseph DiseasePolymerase Chain ReactionHeredodegenerative Disorders, Nervous SystemGenetic MarkersGene FrequencyDNAGenetic VariationDinucleotide RepeatsMinisatellite RepeatsNerve Tissue ProteinsPedigreeGenomic InstabilityGenotypeSequence Analysis, DNATandem Repeat SequencesHaplotypesFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticNucleic Acid ConformationInverted Repeat SequencesAge of OnsetDNA, SatelliteModels, GeneticGenetic Predisposition to DiseaseCerebellar AtaxiaPhenotypeDNA PrimersGenetic Diseases, InbornIntranuclear Inclusion BodiesChromosome FragilityHeterozygoteChromosome MappingMuscular Dystrophy, OculopharyngealRNA-Binding ProteinsGenetics, PopulationGenetic LinkageGenome, HumanAmyotrophic Lateral SclerosisExonsDNA RepairNuclear ProteinsNeurodegenerative DiseasesCase-Control StudiesEvolution, MolecularProteinsAmino Acid SequencePeptidesDNA Mutational AnalysisReceptors, AndrogenDNA, PlantPhylogenyRNA, MessengerTranscription, GeneticGenes, DominantMice, TransgenicCodon, InitiatorMutS Homolog 2 ProteinLinkage DisequilibriumDNA-Binding ProteinsExpressed Sequence TagsGenetic LociRecombination, GeneticSaccharomyces cerevisiaeDNA ReplicationPromoter Regions, GeneticSpecies SpecificityGenetic TestingChromosomes, Human, XMyoclonic Epilepsies, ProgressiveRepetitive Sequences, Amino AcidNucleic Acid HeteroduplexesSequence DeletionPoint MutationX ChromosomeDisease Models, AnimalPolymorphism, Single-Stranded ConformationalIntronsCell Line