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  • Title: HR2 haplotype in Arab population and patients with venous thrombosis in Kuwait.
    Author: Jadaon MM, Dashti AA.
    Journal: J Thromb Haemost; 2005 Jul; 3(7):1467-71. PubMed ID: 15978104.
    Abstract:
    BACKGROUND: Venous thromboembolism (VTE) occurs due to a number of hereditary and acquired disorders of hemostasis. A recently identified polymorphism in factor V gene (A4070G; named HR2) has been reported to be a possible risk factor for the development of VTE, with a high prevalence of 9.5%-15.2% in patients of different ethnic groups in different parts of the world. However, the prevalence of HR2 has not yet been tested in VTE patients of Arab ethnicity. OBJECTIVES: To study the prevalence and possible risk of HR2 haplotype in Arabs. PATIENTS/METHODS: Exactly 188 VTE patients and 100 healthy subjects, all being of Arab ethnicity, were examined for HR2 using Polymerase chain reaction, restriction fragment length polymorphism and agarose gel electrophoresis. RESULTS: Data showed that 31 patients and seven healthy subjects had HR2 haplotype, with a prevalence of 16.5% and 7%, respectively. Furthermore, 43 patients (22.9%) had more than one risk factor for VTE. CONCLUSIONS: The prevalence of HR2 in Arabs is quite high, with a 2.62-fold greater risk of developing VTE. Moreover, coexistence of two or more genetic/acquired defects of VTE is quite common in Arab patients.
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