The D9N, N291S and S447X Variants in the Lipoprotein Lipase (LPL) Gene Are Not Associated with Type III Hyperlipidemia
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Background: Type III hyperlipidemia (Type III HLP) is associated with homozygosity for the epsilon2 allele of the APOE gene. However only about 10% of epsilon2 homozygotes develop Type III HLP and it is assumed that additional genetic and/or environmental factors are required for its development. Common variants in the LPL gene have been proposed as likely genetic co-factors.
Methods: The frequency of the LPL SNPs D9N, N291S and S447X in 100 patients with hyperlipidemia and APOE2/2 genotype has been determined and compared to that in healthy blood donors and patients with hyperlipidemia.
Results: There were no statistically significant difference in the frequencies of the variants between APOE2/2 patients and controls.
Conclusion: It is unlikely that the D9N, N291S or S447X variants in the LPL gene play an important role in the development of Type III HLP.
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