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  • Title: Association of a single nucleotide polymorphism in CPB2 encoding the thrombin-activable fibrinolysis inhibitor (TAF1) with blood pressure.
    Author: Koschinsky ML, Boffa MB, Nesheim ME, Zinman B, Hanley AJ, Harris SB, Cao H, Hegele RA.
    Journal: Clin Genet; 2001 Nov; 60(5):345-9. PubMed ID: 11903334.
    Abstract:
    Thrombin-activable fibrinolysis inhibitor (TAFI) is a hepatically secreted zymogen, whose substrates include bradykinin. The CPB2 gene encoding TAFI is a candidate gene for blood pressure. A recently identified single nucleotide polymorphism (SNP) in the CPB2 coding region, designated as 1057C > T, results in an amino acid change at TAFI residue 325 (Ile > Thr325). We found that the genotype based on this SNP was significantly associated with blood pressure in aboriginal Canadians. Specifically, analysis of variance showed that homozygotes for CPB2 1057T had significantly lower diastolic blood pressure than subjects with other CPB2 genotypes. CPB2 genotype accounted for approximately 3% of the total variation in diastolic blood pressure. consistent with the expected magnitude of a modest genetic effect in a complex trait such as blood pressure. Although the mechanism underlying the association is unclear, the findings are of interest because TAFI may provide a link between coagulation and blood pressure regulation.
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