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Revista argentina de cardiología

versión On-line ISSN 1850-3748


NAU, GERARDO et al. Implementation of an Ambulatory Percutaneous Coronary Intervention Program in Higher Risk Patients. Rev. argent. cardiol. [online]. 2018, vol.86, n.3, pp.103-109. ISSN 1850-3748.

Background: Familial hypercholesterolemia is a primary hyperlipidemia. It is an autosomal dominant genetic disorder of lipoprotein metabolism, characterized by elevated plasma low-density lipoprotein cholesterol and presence of tendon xanthomas, and is associated with early cardiovascular disease.

Objectives: The aim of this study was to investigate the presence of mutations in the main gene associated with the development of familial hypercholesterolemia (LDLR) in a group of patients identified as “index cases” attending the Lipid Clinic of the Hospital Universitario Fundación Favaloro with clinical diagnosis of familial hypercholesterolemia. The ancestral composition of the study population was determined.

Methods: We evaluated 38 patients with clinical diagnosis of familial hypercholesterolemia. Mutation screening of the LDLR gene coding regions and adjacent intronic areas was performed using Sanger sequencing. The ancestral component of the study population was investigated using 46 ancestry inference markers (AIM-Indel).

Results: Fifty different variants were identified, 48% of which were considered pathogenic. A genotype-phenotype severity correlation was established in 60.5% of the patients evaluated. The ancestral component of the study population was predominantly

European, followed by native-American and African in lower proportion.

Conclusions: Genetic testing by LDLR gene sequencing in patients identified as “index cases” with clinical diagnosis of familial hypercholesterolemia allows the correlation between the genetic information and the severity of the clinical phenotype to a cascade testing of the family members presenting the inclusion criteria considered.

Palabras clave : Cholesterol - Risk Factor - Receptors; LDL - Hyperlipidemias - Anticholesteremic Agents..

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