Universal screening at age 1-2 years as an adjunct to cascade testing for familial hypercholesterolaemia in the UK: A

Ailsa J McKay1, Helen Hogan2, Steve E Humphries3

  • 1London School of Hygiene and Tropical Medicine, London, UK; Department of Primary Care and Public Health, Imperial College London, London, UK.

Atherosclerosis
|June 26, 2018
PubMed

Insights

Universal cholesterol screening followed by genetic testing and reverse cascade testing is a cost-effective strategy for diagnosing familial hypercholesterolaemia (FH) in the UK. This approach improves upon current methods for identifying individuals with FH.

Area of Science:

  • Cardiovascular Medicine
  • Genetics
  • Public Health

Background:

  • Familial hypercholesterolaemia (FH) remains significantly underdiagnosed globally.
  • Cascade testing (CT) is effective but relies on identifying index cases.
  • Recent studies show universal screening (US) in early childhood is feasible.

Purpose of the Study:

  • To evaluate the cost-effectiveness of universal cholesterol screening (US) as an adjunct to cascade testing (CT) for familial hypercholesterolaemia (FH) in the UK.
  • To compare various US strategies with no screening.

Main Methods:

  • Seven cholesterol and/or mutation-based US strategies with or without reverse cascade testing (RCT) were compared against no US.
  • A decision model estimated costs and outcomes, utilizing UK CT data for RCT case ascertainment.
  • Probabilistic Markov models and Monte Carlo simulations (n=1000 per model) assessed lifetime costs and health outcomes.

Main Results:

  • A strategy of cholesterol screening, diagnostic genetic testing, and RCT emerged as the most cost-effective.
  • The incremental cost-effectiveness ratio (ICER) was £12,480 per quality-adjusted life year (QALY).
  • Cost-effectiveness remained robust across sensitivity and threshold analyses.

Conclusions:

  • Universal cholesterol screening followed by genetic testing and RCT is recommended for FH diagnosis in the UK.
  • This strategy aligns with the UK's conventional willingness-to-pay threshold.
  • Implementation of this comprehensive screening approach is supported by the findings.
Abstract

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