Cerebellar AtaxiaAtaxiaSyndromeSpinocerebellar AtaxiasSpinocerebellar DegenerationsFriedreich AtaxiaGait AtaxiaAtaxia TelangiectasiaPedigreeGenes, RecessiveCerebellumStiff-Person SyndromeOlivopontocerebellar AtrophiesCerebellar DiseasesMyoclonic Cerebellar DyssynergiaReflex, AbnormalDown SyndromeAge of OnsetApraxiasGenes, DominantMachado-Joseph DiseaseMetabolic Syndrome XMagnetic Resonance ImagingPurkinje CellsMutationTrinucleotide RepeatsBromisovalumNystagmus, PathologicFoot DeformitiesIntellectual DisabilityAbnormalities, MultiplePhenotypeMultiple System AtrophyOcular Motility DisordersAtaxia Telangiectasia Mutated ProteinsOphthalmoplegiaGliadinTrinucleotide Repeat ExpansionAtrophyGlutamate DecarboxylaseDysarthriaParaneoplastic Cerebellar DegenerationMutation, MissenseChromosomes, Human, Pair 19Turner SyndromeNephrotic SyndromeOptic AtrophyGenetic LinkageConsanguinityAnticipation, GeneticHomozygote