TOPICS: Repeated nucleotide bases, anticipation, Huntington disease, basal ganglia, caudate nucleus, thalamus, lentiform nucleus, putamen, globus pallidus, Friedreich ataxia, myotonic dystrophy, fragile X syndrome, autosomal dominant, autosomal recessive, X-linked dominant, CAG repeat, GAA repeat, CTG repeat, CGG repeat, HTT gene on chromosome 4, basal ganglia atrophy, Ach, GABA, dopamine, chorea, athetosis, dementia, depression, hydrocephalus ex vacuo, FXN gene, frataxin, hypertrophic cardiomyopathy, kyphoscoliosis, DMPK gene, myotonin protein kinase dysfunction, FMR1 gene, macroorchidism, mitral valve prolapse, joint hyperlaxity
