Aortic Calcification Progression in Heterozygote Familial Hypercholesterolemia

Area of Science:

• Cardiovascular Medicine
• Genetics
• Radiology

Background:

• Familial hypercholesterolemia (HeFH) is linked to severe aortic calcifications.
• Calcification severity is dependent on age and gene dosage.
• The progression rate of aortic calcification in HeFH patients requires further investigation.

Purpose of the Study:

• To determine the rate of aortic calcification progression in patients with heterozygous familial hypercholesterolemia (HeFH).

Main Methods:

• 16 HeFH patients with a specific LDL receptor mutation underwent serial thoracoabdominal CT scans.
• Aortic calcium (AoCa) scores were quantified at baseline and after an average of 8.2 years.
• Progression rates were compared to a control group undergoing virtual colonoscopy.

Main Results:

• Aortic calcification increased exponentially with age in HeFH patients.
• Age was the primary correlate of AoCa score; LDL cholesterol levels showed minimal correlation.
• HeFH patients exhibited a significantly faster rate of aortic calcification progression (312 Agatston U/y) compared to controls (159 Agatston U/y).

Conclusions:

• HeFH patients demonstrate accelerated aortic calcification, increasing exponentially with age.
• LDL-C levels during treatment appear to have limited impact on the progression rate.
• Novel strategies are needed to prevent aortic calcification, as statins may not be effective and could potentially contribute to the process.