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[Primary lipoprotein lipase deficiency. Study in Quebec]

C Gagné¹, D Brun

¹Département de Médecine, Centre Hospitalier, l'Université Laval, Ste-Foy, Québec, Canada.

Presse Medicale (Paris, France : 1983)

|February 13, 1993

Summary

Primary lipoprotein lipase deficiency (LPLD) is a rare genetic disorder. In Quebec, specific mutations cause high LPLD frequency due to a founder effect, potentially increasing cardiovascular disease risk in carriers.

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Area of Science:

Genetics
Molecular Biology
Cardiovascular Disease

Context:

Primary lipoprotein lipase deficiency (LPLD) is a rare autosomal recessive disorder.
Characterized by hyperchylomicronaemia and pancreatitis.
Recent molecular biology advances aid diagnosis and heterozygote identification.

Purpose:

Investigate the high prevalence of LPLD homozygotes in Quebec.
Identify specific mutations and their geographical distribution.
Explore the potential cardiovascular risks associated with LPLD heterozygotes.

Summary:

High concentrations of LPLD homozygotes in Eastern Quebec are linked to a founder effect from 17th-century French colonists.
Two specific mutations account for 95% of Quebec cases, each with a distinct distribution.
Heterozygotes may have an atherogenic lipid profile, suggesting a predisposition to premature cardiovascular disease.

Impact:

Highlights the role of founder effects in genetic disease prevalence.
Suggests LPLD heterozygotes may be at increased risk for cardiovascular disease.
Emphasizes molecular biology's utility in identifying at-risk populations.

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