Topic
Cholesterylester transfer protein
About: Cholesterylester transfer protein is a research topic. Over the lifetime, 3105 publications have been published within this topic receiving 127289 citations.
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The Heart Research Institute1, St Bartholomew's Hospital2, Karolinska Institutet3, University of Amsterdam4, Pierre-and-Marie-Curie University5, Autonomous University of Madrid6, Columbia University7, Université de Montréal8, University of California, San Francisco9, Pfizer10, University of Wisconsin-Madison11
TL;DR: Although there was evidence of an off-target effect of torcetrapib, it cannot rule out adverse effects related to CETP inhibition, and the trial was terminated prematurely because of an increased risk of death and cardiac events.
Abstract: Background Inhibition of cholesteryl ester transfer protein (CETP) has been shown to have a substantial effect on plasma lipoprotein levels. We investigated whether torcetrapib, a potent CETP inhibitor, might reduce major cardiovascular events. The trial was terminated prematurely because of an increased risk of death and cardiac events in patients receiving torcetrapib. Methods We conducted a randomized, double-blind study involving 15,067 patients at high cardiovascular risk. The patients received either torcetrapib plus atorvastatin or atorvastatin alone. The primary outcome was the time to the first major cardiovascular event, which was defined as death from coronary heart disease, nonfatal myocardial infarction, stroke, or hospitalization for unstable angina. Results At 12 months in patients who received torcetrapib, there was an increase of 72.1% in high-density lipoprotein cholesterol and a decrease of 24.9% in low-density lipoprotein cholesterol, as compared with baseline (P<0.001 for both compari...
2,832 citations
University of Colorado Denver1, Linköping University2, Hoffmann-La Roche3, Houston Methodist Hospital4, The Heart Research Institute5, Saint Louis University6, University of Oslo7, University of Glasgow8, University of Adelaide9, Cedars-Sinai Medical Center10, Montreal Heart Institute11, Mayo Clinic12
TL;DR: In patients who had had a recent acute coronary syndrome, dalcetrapib increased HDL cholesterol levels but did not reduce the risk of recurrent cardiovascular events.
Abstract: Background In observational analyses, higher levels of high-density lipoprotein (HDL) cholesterol have been associated with a lower risk of coronary heart disease events. However, whether raising HDL cholesterol levels therapeutically reduces cardiovascular risk remains uncertain. Inhibition of cholesteryl ester transfer protein (CETP) raises HDL cholesterol levels and might therefore improve cardiovascular outcomes. Methods We randomly assigned 15,871 patients who had had a recent acute coronary syndrome to receive the CETP inhibitor dalcetrapib, at a dose of 600 mg daily, or placebo, in addition to the best available evidence-based care. The primary efficacy end point was a composite of death from coronary heart disease, nonfatal myocardial infarction, ischemic stroke, unstable angina, or cardiac arrest with resuscitation. Results At the time of randomization, the mean HDL cholesterol level was 42 mg per deciliter (1.1 mmol per liter), and the mean low-density lipoprotein (LDL) cholesterol level was 76 ...
1,773 citations
TL;DR: The CETP inhibitor torcetrapib was associated with a substantial increase in HDL cholesterol and decrease in LDL cholesterol and was also associated with an increase in blood pressure, and there was no significant decrease in the progression of coronary atherosclerosis.
Abstract: Background Levels of high-density lipoprotein (HDL) cholesterol are inversely related to cardiovascular risk. Torcetrapib, a cholesteryl ester transfer protein (CETP) inhibitor, increases HDL cholesterol levels, but the functional effects associated with this mechanism remain uncertain. Methods A total of 1188 patients with coronary disease underwent intravascular ultrasonography. After treatment with atorvastatin to reduce levels of low-density lipoprotein (LDL) cholesterol to less than 100 mg per deciliter (2.59 mmol per liter), patients were randomly assigned to receive either atorvastatin monotherapy or atorvastatin plus 60 mg of torcetrapib daily. After 24 months, disease progression was measured by repeated intravascular ultrasonography in 910 patients (77%). Results After 24 months, as compared with atorvastatin monotherapy, the effect of torcetrapib–atorvastatin therapy was an approximate 61% relative increase in HDL cholesterol and a 20% relative decrease in LDL cholesterol, reaching a ratio of L...
927 citations
921 citations
TL;DR: The results that the authors observed in heterozygotes suggest that CETP normally plays a part in the regulation of levels of HDL subclass 2, and the lipoprotein profile of persons with CETP deficiency is potentially antiatherogenic and may be associated with an increased life span.
Abstract: Background and Methods. The plasma cholesteryl-ester transfer protein (CETP) catalyzes the transfer of cholesteryl esters from high-density lipoprotein (HDL) to other lipoproteins. We recently described a Japanese family with increased HDL levels and CETP deficiency due to a splicing defect of the CETP gene. To assess the frequency and phenotype of this condition, we screened 11 additional families with high HDL levels by means of a radioimmunoassay for CETP and DNA analysis. Results. We found the same CETP gene mutation in four families from three different regions of Japan. Analysis of Restriction-Fragment Length polymorphisms of the mutant CETP allele showed that all probands were homozygous for the identical haplotype. Family members homozygous for CETP deficiency (n = 10) had moderate hypercholesterolemia (mean total cholesterol level [±SD], 7.01±0.83 mmol per liter), markedly increased levels of HDL cholesterol (4.24±1.01 mmol per liter) and apolipoprotein A-I, and decreased levels of low-d...
842 citations