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Genetic variations in the cholesteryl ester transfer protein gene and high density lipoprotein cholesterol levels in Taiwanese Chinese

Abstract.

This study analyzed the association of the I14A mutation, the D442G mutation, and the TaqIB polymorphism of the cholesteryl ester transfer protein (CETP) gene in 718 Chinese individuals with high-density lipoprotein cholesterol levels (HDL-C) living in Taiwan. The analysis revealed that the I14A mutation was not present in any of the 110 subjects with HDL-C levels above 60 mg/dl. By contrast, the D442G mutation was present in 48 of the 718 (6.7%) subjects tested. Significantly higher HDL-C levels were noted for bearers of the D442G mutation compared with non-bearers; however, this association was weaker for males and for subjects carrying the TaqIB1 allele. The TaqIB2 allele was also associated with higher HDL-C levels. From multivariate analysis, independent associations were demonstrated for the TaqIB2 polymorphism and the D442G mutation, and elevated HDL-C levels. For obese subjects, however, the presence of the TaqIB2 or D442G allele was not associated with increased HDL-C levels. For subjects with triglycerides at a concentration greater than 150 mg/dl, the association of both alleles with HDL-C levels was also diminished. Thus, genetic variation at the CETP gene locus may account for a significant proportion of the difference in HDL-C levels; however, it seems reasonable to suggest that the effects of the allele interact with genetic variations expressed within the sample population, and with sex, obesity, and plasma triglyceride levels.

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Correspondence to Lung-An Hsu.

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Hsu, L., Ko, Y., Hsu, K. et al. Genetic variations in the cholesteryl ester transfer protein gene and high density lipoprotein cholesterol levels in Taiwanese Chinese. Hum Genet 110, 57–63 (2002). https://doi.org/10.1007/s00439-001-0640-z

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