Concomitancy of mutation in FRDA gene and FMR1 premutation in 58 year-old woman.
Copyright policy )Concomitancy of mutation in FRDA gene and FMR1 premutation in 58 year-old woman.
DNA testing broadens diagnostic tools available for hereditary ataxias. However, together with current knowledge of genes and their mutations crop up new phenotype figures of diseases already well known. Diagnostic problems in practice can consist in part due to the very similar symptoms of hereditary ataxias and acquaintance in or availability of new techniques such as DNA testing and result in misdiagnosis. We present a case study of a 57 year-old woman with both expansion of the triplet repetitive sequence of FRDA gene and a premutation in FMR1 gene. At present we diagnose her with Very Late Onset Friedreich s ataxia, but we advise of possible combinations or aggravations of her symptoms due to manifestation of Fragile X premutation tremor/ataxia syndrome. In nontypical phenotypes of DNA verifying hereditary ataxias we recommend searching of comorbidity, specifically from a range of hereditary ataxias with very similar spectra of symptoms.
- Charles University Czech Republic
Gait Ataxia, Fragile X Messenger Ribonucleoprotein 1, Reverse Transcriptase Polymerase Chain Reaction, Frataxin, RNA-Binding Proteins, Nerve Tissue Proteins, DNA, Middle Aged, Phenotype, Trinucleotide Repeats, Friedreich Ataxia, Fragile X Syndrome, Iron-Binding Proteins, Mutation, Humans, Female
Gait Ataxia, Fragile X Messenger Ribonucleoprotein 1, Reverse Transcriptase Polymerase Chain Reaction, Frataxin, RNA-Binding Proteins, Nerve Tissue Proteins, DNA, Middle Aged, Phenotype, Trinucleotide Repeats, Friedreich Ataxia, Fragile X Syndrome, Iron-Binding Proteins, Mutation, Humans, Female
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