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1998
DOI: 10.1002/(sici)1097-0223(199808)18:8<831::aid-pd437>3.3.co;2-e
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Prenatal diagnosis of Friedreich ataxia

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Cited by 3 publications
(3 citation statements)
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“…Before the identification of the FRDA gene, prenatal diagnosis was based on segregation analysis of flanking linked markers in the fetal DNA of mutations found in the proband, which required DNA from both parents [113]. To date, prenatal diagnosis is feasible by direct analysis of the GAA repeat, and in very rare cases, the GAA repeat and point mutations [114]. Assuming a carrier rate in the Caucasian general population of 1:100 (2% of mutations being point mutations), prior risk for a patient to have an affected child is 1:200.…”
Section: Clinical Descriptionmentioning
confidence: 99%
“…Before the identification of the FRDA gene, prenatal diagnosis was based on segregation analysis of flanking linked markers in the fetal DNA of mutations found in the proband, which required DNA from both parents [113]. To date, prenatal diagnosis is feasible by direct analysis of the GAA repeat, and in very rare cases, the GAA repeat and point mutations [114]. Assuming a carrier rate in the Caucasian general population of 1:100 (2% of mutations being point mutations), prior risk for a patient to have an affected child is 1:200.…”
Section: Clinical Descriptionmentioning
confidence: 99%
“…74 No patients homozygous for point mutations have been described. The chances of a person with FRDA having homozygous point mutations is about 1:250016 and therefore the population incidence of a person being homozygous for a point mutation is expected to be approximately one in 100 million!…”
Section: Point Mutationsmentioning
confidence: 99%
“…Παρόλα αυτά, για τα άτομα που κατάγονται από τη Νάπολη (Ιταλία), η πιθανότητα είναι μεγαλύτερη καθώς η εμφάνιση της μετάλλαξης I154F είναι συχνή. Ο έλεγχος συγκεκριμένης σημειακής μετάλλαξης η οποία έχει συχνή εμφάνιση σε κάποιο πληθυσμό θα πρέπει να ελέγχεται σε συνδυασμό με τη μελέτη για επέκταση των GAA, όταν πραγματοποιείται έλεγχος για την ύπαρξη φορέων95 . Στην υποκατηγορία αυτή ανήκουν δύο διαφορετικές ομάδες αταξιών, η οπτικοκινητική απραξία τύπου 1 και η οπτικοκινητική απραξία τύπου 2.…”
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