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  • The association of the JAK2 46/1 haplotype with non-splanchnic venous thrombosis [Elektronski vir]
    Žerjavič, Katja ...
    Background: The inherited JAK2 46/1 haplotype is strongly associated with the development of myeloproliferative neoplasms (MPNs), and its increased frequency has also been reported in splanchnic ... venous thrombosis (SVT). In the present study, the role of the JAK2 46/1 haplotype in non-splanchnic venous thrombosis (non-SVT) was investigated. Methods and Results: We genotyped 438 patients with non-SVT, 226 patients with MPNs and 459 healthy controls for three single nucleotide polymorphisms (SNPs) which tag the JAK2 46/1 haplotype (rs12342421 G > C, rs12343867 T > C and rs10974944 C > G). We found statistically significant association of the rs12342421 GC + CC genotypes (OR = 1.40; p = 0.023) and the rs12343867 TC + CC genotypes (OR = 1.83; p = 7.02x10- 5) with non-SVT. We also found that the CC haplotype of these two SNPs was associated with an increased risk of the disease (OR = 1.68; p = 0.009). Stratification analysis indicated that the observed association of the JAK2 46/1 haplotype with non-SVT was probably largely free of confounding effect of thrombophilic risk factors. In addition, we established a strong association of SNPs rs12342421 and rs10974944 and their CG haplotype with MPNs and with JAK2 V617F-positive MPNs. Conclusions: This study provides statistical evidence that SNPs rs12342421 and rs12343867 are associated with an increased risk of non-SVT. Consistently, haplotypes of the SNPs were also associated with non-SVT risk, suggesting that inherited genetic variation in the JAK2 gene may play a role in the pathogenesis of non-SVT. Furthermore, the reported associations of the JAK2 46/1 haplotype with MPNs as well as with the occurrence of the JAK2 V617F mutation in MPNs were confirmed.
    Source: Thrombosis research. - ISSN 0049-3848 (Vol. 132, issue 2, 2013, str. e86-e93)
    Type of material - e-article ; adult, serious
    Publish date - 2013
    Language - english
    COBISS.SI-ID - 4724799

    Link(s):

    http://www.sciencedirect.com/science/article/pii/S0049384813002727
    DOI

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