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Autosomal recessive hypercholesterolemia in a Sicilian kindred harboring the 432insA mutation of the ARH gene

Authors :
S. Travali
A. Brogna
Maurizio Averna
Davide Noto
C.M. Barbagallo
Alberto Notarbartolo
Giovanni Emmanuele
B. Fiore
Angelo B. Cefalù
Manfredi Rizzo
Andrea Pace
Maria Clorinda Mazzarino
Alberto Corsini
Barbagallo, CM
Emmanuele, G
Cefalù, AB
Fiore, B
Noto, D
Mazzarino, MC
Pace, A
Brogna, A
Rizzo, M
Corsini, A
Notarbartolo, A
Travali, S
Averna, M
Source :
Atherosclerosis. 166:395-400
Publication Year :
2003
Publisher :
Elsevier BV, 2003.

Abstract

We describe a Sicilian family presenting a recessive form of hypercholesterolemia harboring a mutation of the autosomal recessive hypercholesterolemia (ARH) gene. In two of the three sibs, a 26-year-old male and a 22-year-old female, a severe hypercholesterolemia was diagnosed with very high levels of plasma cholesterol (15.9 and 12.2 mmol/l, respectively); tendon xanthomatas and xanthelasms were present and in the male proband was documented a diffuse coronary atherosclerotic disease with a rapid and fatal progression. Both the parents had normal or slightly increased levels of plasma cholesterol. All causes of secondary hypercholesterolemia were ruled out as well as an involvement of the LDL receptor or apoB genes. β-Sitosterol plasma levels were in the normal range. Cultured fibroblasts from skin biopsy from parents and the two probands displayed a normal ability to bind and degrade 125 I-LDL. Direct sequencing of ARH gene demonstrated the presence of a 432insA mutation in homozygosis in the two probands; parents were heterozygotes for the same mutation. This mutation is the first report of a mutation of the ARH gene responsible for recessive forms of hypercholesterolemia in Sicily.

Details

ISSN :
00219150
Volume :
166
Database :
OpenAIRE
Journal :
Atherosclerosis
Accession number :
edsair.doi.dedup.....05e8d41b1e7f1463171e93d7be28391e