Trinucleotide GAA repeat expansions in seven French Friedreich ataxia families
Lucotte, G.; Berriche, S.; David, F.; Bathelier, C.; Turpin, J.C.
Genetic Counseling 8(3): 189-194
1997
ISSN/ISBN: 1015-8146 PMID: 9327260 Document Number: 473128
We collected 7 Friedreich ataxia (FRDA) pedigrees from France. All cases but one family were homozygous for an unstable GAA trinucleotide expansion in the first intron of the frataxin gene. In this peculiar pedigree absence of the GAA expansion supports the notion of possible genetic heterogeneity of FRDA.