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Recurrent mutation at aa 792 in the LDL receptor gene in a French patient

✍ Scribed by N. Loux; P. Benlian; D. Pastier; C. Boileau; J. P. Cambou; L. Monnier; C. Percheron; C. Junien

Publisher
Springer
Year
1991
Tongue
English
Weight
413 KB
Volume
87
Category
Article
ISSN
0340-6717

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✦ Synopsis

Many mutations in the low density lipoprotein receptor gene (LDLR) have been characterized at the molecular level in individuals with familial hypercholesterolemia. Most of the mutations that have been reported are large deletions or insertions in the gene, it being much more difficult to identify point mutations. In this study, 139 unrelated French familial hypercholesterolemia subjects were screened for the presence of three different previously described LDLR point mutations, employing the polymerase chain reaction and allele-specific oligonucleotide hybridization. Only one subject carried a point mutation at amino acid position 792, which substituted a Trp codon for a Stop codon. The same mutation has previously been described in a subject originating from Saudi Arabia. Haplotype analysis of LDLR associated with each mutation was performed. The haplotypes were totally different, suggesting that this mutation has occurred more than once.

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