6533b86dfe1ef96bd12c9761

RESEARCH PRODUCT

Genetic polymorphisms affecting the phenotypic expression in familial hypercholesterolemia

Alfredo CantaforaStefano BertoliniLivia PisciottaMaurizio AvernaSebastiano CalandraSilvia LangheimLilla Di ScalaScipione MartiniA. BellocchioPaola MasturzoGianni PesClaudio Stefanutti

subject

Apolipoprotein EMaleSettore MED/09 - Medicina InternaApolipoprotein BFamilial hypercholesterolemiaGene mutationPolymerase Chain ReactionCoronary artery diseasecoronary artery disease; familial hypercholesterolemia; genetic polymorphisms; plasma lipidsCohort Studieschemistry.chemical_compoundGenotypePlasma lipidsOdds RatiobiologyFamilial hypercholesterolemia Plasma lipids Genetic polymorphisms Coronary artery diseaseIncidenceMiddle AgedPhenotypelipids (amino acids peptides and proteins)FemaleCardiology and Cardiovascular MedicineAdultmedicine.medical_specialtyMolecular Sequence DataFamilial hypercholesterolemiaPlasma lipidGenetic polymorphismsRisk AssessmentHyperlipoproteinemia Type IIFamilial hypercholesterolemia; Plasma lipids; Genetic polymorphisms; Coronary artery diseasePredictive Value of TestsInternal medicinemedicineConfidence IntervalsHumansGenetic Predisposition to DiseaseGenetic polymorphismPolymorphism GeneticBase SequenceCholesterolCholesterol HDLCase-control studyCholesterol LDLmedicine.diseaseEndocrinologyApolipoproteinschemistrySettore MED/03 - Genetica MedicaGene Expression RegulationReceptors LDLCase-Control StudiesLDL receptorbiology.protein

description

The clinical expression of heterozygous familial hypercholesterolemia (FH) is highly variable even in patients carrying the same LDL receptor (LDL-R) gene mutation. This variability might be due to environmental factors as well as to modifying genes affecting lipoprotein metabolism. We investigated Apo E (2, 3, 4), MTP (-493G/T), Apo B (-516C/T), Apo A-V (-1131T/C), HL (-514C/T and -250G/A), FABP-2 (A54T), LPL (D9N, N291S, S447X) and ABCA1 (R219K) polymorphisms in 221 unrelated FH index cases and 349 FH relatives with defined LDL-R gene mutations. We found a significant and independent effect of the following polymorphisms on: (i) plasma LDL-C (Apo E, MTP and Apo B); (ii) plasma HDL-C (HL, FABP-2 and LPL S447X); (iii) plasma triglycerides (Apo E and Apo A-V). In subjects with coronary artery disease (CAD+), the prevalence of FABP-2 54TT genotype was higher (16.5% versus 5.2%) and that of ABCA1 219RK and KK genotypes lower (33.0% versus 51.5%) than in subjects with no CAD. Independent predictors of increased risk of CAD were male sex, age, arterial hypertension, LDL-C level and FABP-2 54TT genotype, and of decreased risk the 219RK and KK genotypes of ABCA1. These findings show that several common genetic variants influence the lipid phenotype and the CAD risk in FH heterozygotes.

yearjournalcountryeditionlanguage
2004-01-01
10.1016/j.atherosclerosis.2003.12.037http://hdl.handle.net/11567/249102