Cascade Screening for Familial Hypercholesterolemia (FH).

Area of Science:

• Genetics
• Cardiology
• Public Health

Background:

• Familial hypercholesterolemia (FH) is an autosomal dominant disorder causing high LDL cholesterol and premature coronary heart disease (CHD).
• It's a common inherited disorder, particularly in European descent populations, often caused by mutations in LDLR, APOB, or PCSK9 genes.
• Most FH patients remain undiagnosed or undertreated despite their high CHD risk.

Purpose of the Study:

• To review the clinical validity and utility of cascade screening for FH.
• To emphasize the importance and recommendation of DNA testing in identifying FH-causing mutations.

Main Methods:

• Cascade screening involves systematic family tracing to identify at-risk individuals.
• Review of available evidence on the effectiveness of cascade screening and DNA testing for FH.

Main Results:

• Cascade screening is recommended by UK's NICE for relatives of diagnosed FH patients.
• The process aims to identify additional FH patients through family tracing.

Conclusions:

• Early diagnosis and effective management of FH through cascade screening and DNA testing can reduce heart disease morbidity and mortality.
• The study highlights the value of cascade screening and genetic testing in managing FH.