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  • Title: Genetic variants on chromosome 9p21 and ischemic stroke in Chinese.
    Author: Hu WL, Li SJ, Liu DT, Wang Y, Niu SQ, Yang XC, Zhang Q, Yu SZ, Jin L, Wang XF.
    Journal: Brain Res Bull; 2009 Aug 14; 79(6):431-5. PubMed ID: 19559344.
    Abstract:
    In a hospital based case control study, we investigated the association of cyclin-dependent kinase inhibitor 2A (CDKN2A) gene, cyclin-dependent kinase inhibitor 2B (CDKN2B) gene, and two genetic variants (rs10757274 and rs2383206) on chromosome region 9p21 with ischemic stroke in Chinese Hans. Two polymorphisms in the CDKN2A gene (rs3088440 and rs3731245) and two polymorphisms in the CDKN2B gene (rs3217992 and rs1063192) were selected by using a strategy of tagging single nucleotide polymorphisms (tSNP). We observed significant association of rs2383206 with ischemic stroke. Subjects with the GG/GA genotype of rs2383206 had a 1.51-fold (95%CI 1.11-2.05, p=0.009) increased risk of stroke, compared with those with the AA genotype. In addition, the GG/GA genotypes of rs2383206 and rs3731245 was associated with an increased risk of large vessel subtype and small vessel subtype of ischemic stroke, respectively, with ORs of 2.09 (95%CI 1.30-3.37, p=0.002) and 1.63 (95%CI 1.06-2.51, p=0.026), respectively. In gene-environmental interaction analysis, elevation of ischemic stroke risk was observed among AG+GG genotype carriers who consume alcohol, smoke cigarette, and have hypertension, with adjusted combined ORs of 2.86(1.51-5.41), 4.30(2.38-7.77), and 13.97(7.78-25.07), respectively, compared with low-risk individuals for rs2383206 (GG carriers who did not consume alcohol, smoke cigarette, and without hypertension). We provide evidence that genetic variants on chromosome region 9p21 may implicated in the prevalence of ischemic stroke in Chinese.
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