Coronary plaque burden, plaque characterization and their prognostic implications in familial hypercholesterolemia: A

Leopoldo Pérez de Isla1, Rodrigo Alonso2, José Juan Gómez de Diego3

  • 1Cardiology Department, Hospital Clínico San Carlos, IDISSC, Facultad de Medicina Universidad Complutense, Madrid, Spain; Fundación Hipercolesterolemia Familiar, Madrid, Spain.

Atherosclerosis
|December 2, 2020
PubMed

Insights

Semi-automated plaque characterization (SAPC) in familial hypercholesterolemia (FH) patients quantifies coronary plaque burden. Higher plaque burden predicts increased cardiovascular risk and impacts event-free survival, aiding prognosis.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Genetics

Background:

  • Familial hypercholesterolemia (FH) significantly increases the risk of premature atherosclerotic cardiovascular disease.
  • Coronary computed tomographic angiography (CTA) with semi-automated plaque characterization (SAPC) offers detailed insights into coronary plaque.
  • Understanding plaque burden and characteristics is crucial for managing FH patients.

Purpose of the Study:

  • To quantify and characterize coronary plaque burden in FH patients using SAPC.
  • To identify factors associated with plaque burden and characteristics.
  • To analyze the prognostic implications of SAPC-derived parameters in FH.

Main Methods:

  • A cohort of 259 asymptomatic individuals with molecularly confirmed FH underwent coronary CTA.
  • Semi-automated plaque characterization (SAPC) was employed to analyze coronary plaque burden and composition.
  • Follow-up data was collected to assess cardiovascular events and survival.

Main Results:

  • Median plaque burden was 25.0%, with non-calcified plaque at 22.83% and calcified plaque at 1.12%.
  • Plaque burden, non-calcified plaque burden, calcified plaque burden, and coronary calcium score were independently associated with 5-year cardiovascular risk.
  • Increased plaque burden was significantly related to reduced event-free survival (HR: 1.11).

Conclusions:

  • SAPC effectively quantifies coronary atherosclerosis and its components in FH patients.
  • Plaque burden metrics derived from SAPC are independent predictors of cardiovascular risk.
  • Coronary plaque burden is a significant prognostic indicator in individuals with FH.
Abstract

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