Related Experiment Video
Updated: Jul 13, 2026

Cell-free Biochemical Fluorometric Enzymatic Assay for High-throughput Measurement of Lipid Peroxidation in High Density Lipoprotein
Published on: October 12, 2017
Evaluation of coronary risk factors in patients with heterozygous familial hypercholesterolemia
P N Hopkins1, S Stephenson, L L Wu
1Department of Pathology, University of Utah School of Medicine, Salt Lake City, USA. paul@ucvg.med.utah.edu
Insights
Age and gender are key predictors of premature coronary artery disease (CAD) in familial hypercholesterolemia (FH). While high LDL cholesterol is central, smaller LDL particles and smoking also increase CAD risk in FH patients.
Area of Science:
- Cardiovascular Medicine
- Genetics
- Metabolic Disorders
Background:
- Familial hypercholesterolemia (FH) is characterized by elevated low-density lipoprotein cholesterol (LDL) and a high risk of premature coronary artery disease (CAD).
- Predictors of CAD risk in FH patients beyond LDL cholesterol are not fully understood, necessitating comprehensive investigation.
Purpose of the Study:
- To comprehensively examine various risk factors for premature CAD in patients with familial hypercholesterolemia.
- To identify key determinants of CAD onset in FH patients beyond elevated LDL cholesterol.
Main Methods:
- A cohort of 262 FH patients aged 30 years or older, including 68 with premature CAD, underwent assessment of plasma lipids, carotid intima-media thickness, and other coronary risk factors.
- Statistical analyses, including odds ratios, were used to determine the significance of various factors in predicting CAD risk.
Main Results:
- Age and male gender were the most significant predictors of premature CAD in FH patients (men had 5.64 times the risk of women).
- Cigarette smoking (OR 2.71), smaller LDL particle size (OR 2.60), and elevated white blood cell count were also significant risk factors.
- Lipoprotein(a) and xanthoma were associated with risk only in very early CAD cases; carotid intima-media thickness was not associated with risk after age correction.
Conclusions:
- Preventive efforts in FH should primarily focus on managing high LDL cholesterol.
- While age and gender are critical, smaller LDL particle size and smoking warrant consideration in risk assessment for FH patients.
- Further research is needed to confirm the role of smaller LDL particles as a risk factor in FH.
Abstract:
Age at onset of clinically manifested coronary artery disease (CAD) varies widely among patients with familial hypercholesterolemia (FH). A number of factors in addition to high low-density lipoprotein cholesterol (LDL) have been suggested as predictors of risk among patients with FH, but a comprehensive examination of their utility is lacking. We therefore measured plasma lipids, carotid intima-medial thickness, and a variety of coronary risk factors in 262 patients with FH > or = 30 years old (68 of whom had premature CAD). Age (p < 0.0001) and gender were the most important determinants of premature CAD risk, with men having 5.64 times the risk of women (p < 0.0001). In addition, cigarette smoking (odds ratio [OR] 2.71, p = 0.026), smaller LDL as determined by the LDL cholesterol/LDL apolipoprotein B ratio (OR 2.60, p = 0.014), and white blood cell count (p = 0.014) were also statistically significant risk factors. Lipoprotein(a) and the presence of xanthoma were associated with risk only in very early coronary cases. After correction for age, carotid intima-media thickness was not associated with CAD risk. Insulin, fibrinogen, homocysteine, plasma C-reactive protein, and the angiotensin-converting enzyme insertion/deletion polymorphism were unrelated to risk in this cohort. These results provide little justification for extensive investigation of risk factors among patients with FH, at least for the risk factors examined here. Rather, the inherent high LDL cholesterol of these patients should be the focus of preventive efforts. The novel finding of increased risk with smaller LDL may prove useful but needs further confirmation.
Related Concept Videos
Cholesterol: Significance and Regulation
Considering cholesterol and...
Coronary Artery Disease II: Pathophysiology
Coronary Artery Disease IV: Preventive Measures
Acute Coronary Syndrome III: Diagnostic Studies
Atherosclerosis II: Clinical Manifestations and Diagnostic Tests
Atherosclerosis III: Management

