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Clinical and Applied Thrombosis/Hemostasis
Year: 2010  |  Volume: 16  |  Issue: 2  |  Page No.: 184 - 188

Plasminogen Activator Inhibitor-1 (PAI-1) Gene 4G/5G Promoter Polymorphism is Seen in Higher Frequency in the Indian Patients With Deep Vein Thrombosis

Mohammed Suhail Akhter, R Ranjan, A Meena, Birendra Kumar Yadav and R. Saxena    

Abstract:

Introduction: A number of prothrombotic and fibrinolytic disorders may lead to venous thrombosis. A 4G/5G polymorphism located in the promoter region of plasminogen activator inhibitor-1 (PAI-1) gene has been found to be commonly associated with the levels of PAI-1 and might be a risk factor for deep vein thrombosis (DVT). The aim of this study was to look for the potential association of this polymorphism with DVT in the Asian Indian population. Material and methods: A total of 110 consecutive patients (M:F = 62:48) with idiopathic DVT and equal number of age- and sex-matched healthy controls were the study participants. All study participants were typed for the PAI-1 4G/ 5G polymorphism, factor V Leiden, factor V Hong Kong/Cambridge mutations, and HR2 haplotype. Result: The variant allele for the PAI-1 4G/5G polymorphism showed both genotypic (P = .0013, 2 = 10.303; odds ratio [OR] = 3.75) as well as allelic association (P = .0004, 2 = 12.273; OR = 1.99) with DVT. Factor V Leiden and factor V HR2 haplotype were observed in 10 (9.0%) and 13 (11.8%) patients, respectively. None of the study participants showed the factor V Hong Kong Cambridge mutations. Conclusion: Our study shows the association of 4G allele with DVT in Asian Indian population. The higher prevalence of 4G polymorphism in patients with DVT (compared with controls) seen in our study is in concordance with previous reports from the Caucasian population.

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