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  • Title: TaqIB polymorphism in CETP gene: the influence on incidence of cardiovascular disease in statin-treated patients with familial hypercholesterolemia.
    Author: Mohrschladt MF, van der Sman-de Beer F, Hofman MK, van der Krabben M, Westendorp RG, Smelt AH.
    Journal: Eur J Hum Genet; 2005 Jul; 13(7):877-82. PubMed ID: 15856070.
    Abstract:
    The effects of TaqI restriction fragment length polymorphism of the CETP gene on the occurrence of cardiovascular disease (CVD) events were investigated in patients with familial hypercholesterolemia (FH). A total of 300 FH patients, of which 116 (39%) had CVD at the start of the study, were treated with statins during a mean period of 8.5 years. The distribution of Taq1B genotypes was 31% B1B1, 49% B1B2, and 20% B2B2. No differences were found at baseline between the three genotypes, except for an association of the B1 allele with lower high-density lipoprotein (HDL)-cholesterol levels (P=0.003). All patients were put on statins within 6-8 weeks after the first visit; about 60% received simvastatin (20-40 mg daily) and 40% either pravastatin (40 mg daily) or atorvastatin (20-40 mg daily). The different statin treatments were similar for all groups. The mean change of plasma HDL-cholesterol, low-density lipoprotein-cholesterol, and triglyceride concentration during statin therapy was similar for the three genotypes. During follow-up, new CVD events were recorded in 22 (37%) of the B2B2 patients (n=59) and in 67 (28%) of B1 allele carriers (n=241) (P=0.36). The relative risk for CVD events, after adjustment for age, gender, and CVD at intake, was 1.8 (CI: 1.1-3.0) for B2B2 carriers compared to B1 allele carriers. The Taq1B polymorphism is a significant predictor of future CVD events in statin-treated patients with FH. In spite of similar improvement of the lipoprotein profile during statin therapy, our FH patients with the B2B2 genotype may have a higher CVD risk in comparison with the B1 allele carriers.
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