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Genetic heterogeneity of autosomal dominant hypercholesterolemia

Authors

  • M Varret,

    Corresponding author
    1. INSERM U781, Hôpital Necker-Enfants Malades, Université Paris 5 – René Descartes, Paris, France
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  • M Abifadel,

    1. INSERM U781, Hôpital Necker-Enfants Malades, Université Paris 5 – René Descartes, Paris, France
    2. Faculté de Pharmacie, Université Saint-Joseph, Beirut, Lebanon
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  • J-P Rabès,

    1. INSERM U781, Hôpital Necker-Enfants Malades, Université Paris 5 – René Descartes, Paris, France
    2. Laboratoire de Biochimie et de Génétique Moléculaire, CHU Ambroise Paré, Boulogne, AP-HP, Université Versailles-Saint-Quentin-en-Yvelines, France
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  • C Boileau

    1. INSERM U781, Hôpital Necker-Enfants Malades, Université Paris 5 – René Descartes, Paris, France
    2. Laboratoire de Biochimie et de Génétique Moléculaire, CHU Ambroise Paré, Boulogne, AP-HP, Université Versailles-Saint-Quentin-en-Yvelines, France
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Mathilde Varret, INSERM U781, Bâtiment Maurice Lamy, Hôpital Necker-Enfants Malades, 149 Rue De Sèvres, 75015 Paris, France.
Tel.: +33 1 44 49 44 85;
fax: +33 1 47 83 32 06;
e-mail: varret@necker.fr

Abstract

Autosomal dominant hypercholesterolemia (ADH) is characterized by isolated elevation of plasmatic low-density lipoprotein cholesterol associated with high risk of premature cardiovascular complications. More than 1000 mutations in the LDLR gene and 9 in the APOB gene have been implicated. We have shown further heterogeneity with the discovery of missense mutations in the PCSK9 gene resulting in ADH. Different studies have tried to evaluate the respective contribution of mutations in each gene to the disease, but results were not always in agreement. After a brief overview of mutations reported for each gene, strategies and results of these different studies are reviewed and analyzed. Altogether, numerous reports give evidence for the existence of a greater level of genetic heterogeneity in ADH and the involvement of still unknown genes.

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