Genetic and molecular architecture of familial hypercholesterolemia

Marianne Abifadel1,2, Catherine Boileau1,3

  • 1UMR1148, Inserm, Hôpital Bichat-Claude Bernard, 46 rue Henri Huchard, F-75018 Paris, France.

Insights

Familial hypercholesterolemia (FH), a genetic condition causing high cholesterol, is underdiagnosed globally. Early diagnosis and accessible treatments for FH are crucial to prevent premature cardiovascular disease and reduce patient burden.

Area of Science:

  • Cardiology
  • Genetics
  • Public Health

Background:

  • Atherosclerotic cardiovascular disease is the leading global cause of mortality.
  • Familial hypercholesterolemia (FH) significantly increases the risk of premature atherosclerosis and cardiovascular disease.
  • Despite its prevalence, FH remains largely underdiagnosed worldwide.

Purpose of the Study:

  • To highlight the genetic basis of Familial hypercholesterolemia (FH).
  • To review advancements in the diagnosis and treatment of FH.
  • To emphasize the need for improved accessibility of FH prevention, diagnosis, and treatment.

Main Methods:

  • Genetic analysis of genes including LDLR, APOB, PCSK9, APOE, and LDLRAP1.
  • Review of clinical diagnostic tools and therapeutic advancements.
  • Analysis of the impact of genetic discoveries and pharmacological interventions.

Main Results:

  • Identified key genes (LDLR, APOB, PCSK9, APOE, LDLRAP1) responsible for FH.
  • Demonstrated significant progress in diagnostic tools and therapeutic options over the last two decades.
  • Highlighted the role of genetic discoveries (e.g., LDLR, PCSK9) and treatments (e.g., statins, PCSK9 inhibitors) in managing FH.

Conclusions:

  • Genetic discoveries have revolutionized FH diagnosis and treatment.
  • Continued advancements in diagnostics and therapeutics offer improved management strategies.
  • Enhancing the accessibility of prevention, diagnosis, and treatment is vital to mitigate the lifelong impact of FH.

Related Concept Videos

Cholesterol: Significance and Regulation01:29

Cholesterol: Significance and Regulation

Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
Considering cholesterol and...
646
Cystic Fibrosis: Pathogenesis01:23

Cystic Fibrosis: Pathogenesis

Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
344
Atherosclerosis I: Introduction01:30

Atherosclerosis I: Introduction

Atherosclerosis is a progressive disorder characterized by the buildup of plaques on the arterial inner wall, causing them to narrow and harden over time. These plaques comprise lipids, calcium, blood components, carbohydrates, and fibrous tissue. The process primarily affects the intima of large and medium-sized arteries, reducing blood flow in any artery.Etiology and risk factorsThe cause of atherosclerosis is multifactorial, involving a complex interplay among endothelial injury, lipid...
44
Coronary Artery Disease II: Pathophysiology01:26

Coronary Artery Disease II: Pathophysiology

Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
24
Inheritance of Chromatin Structures03:17

Inheritance of Chromatin Structures

Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying...
6.5K
Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
37