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DOI: 10.1160/TH04-07-0457
Polymorphisms in prothrombotic genes and their impact on ischemic stroke in a Sardinian population
Financial support: Supported by a grant from the Italian Ministry of Health (IRCCS) to SR and MV, a fellowship from the Swiss National Science Foundation (PBBSB-100661) to DN and a grant from MURST 2004 to SR.Publication History
Received
28 July 2004
Accepted after resubmission
09 March 2005
Publication Date:
11 December 2017 (online)
![](https://www.thieme-connect.de/media/10.1055-s-00035024/200506/lookinside/thumbnails/10-1160-th04-07-0457-1.jpg)
Summary
Genetic factors are involved in the individual predisposition to develop ischemic stroke (IS). In the present study we tested the role of the Factor VII G10976A and –C122T polymorphisms on the susceptibility to develop IS in a genetically homogenous and clinically well ascertained case-control study including 294 cases (median age 75 years; 176 males/118 females) and 286 controls (median age 73 years; 163 males/123 females) in Sardinia, Italy. In addition, we carried out an exploratory analysis with respect to other frequently studied polymorphisms of haemostatic factor genes: Factor II G20210A, Factor V G1691A,, Fibrinogen α-chain Thr312Ala, Fibrinogen β-chain –C148T, Factor XIII G185T, GPIIb/IIIa T1565C. Among all the genes tested, FVII –C122T showed a significant, independent contribution to IS predisposition both in crude and adjusted analyses (crude OR 1.52, 95% CI 1.09–2.10, P=0.013; adjusted OR 1.48, 95% CI 1.04–2.09, P=0.028, respectively). Haplotype analyses revealed a conserved population structure with high linkage disequilibrium between both FVII mutations tested. Blood levels of FVII had an inverse relationship with the polymorphism involved. Apart from genetic influence, there was a significant role for hypertension (OR=1.7, 95% CI 1.19–2.43, P=0.003), hypercholesterolemia (OR=2.21, 95% CI 1.38–3.54, P=0.001) and atrial fibrillation (OR=1.66, 95% CI 1.06–2.58, P=0.026) on IS occurrence. In summary, we describe evidence for a possible direct association of FVII gene molecular variants with the occurrence of IS in a genetically homogenous human sample.
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