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[An association between NF-E2-related factor 2-617 C/A gene polymorphisms and sepsis in Chinese Han population].

OBJECTIVE
To investigate the association between the single nucleotide polymorphisms (SNPs) in NF-E2-related factor 2-617 (NRF2-617) promoter region with the susceptibility to the risk of sepsis.


METHODS
In this case-control association study, 203 healthy controls and 174 patients with sepsis in Wenzhou Han population were enrolled and genotyped by DNA direct sequencing.


RESULTS
(1) The (CA+AA) genotype frequency was significantly higher in the sepsis group than in the control group (59.2% vs 46.3%, P = 0.012). (2) Compared with the general sepsis group, higher (CA+AA) genotype frequency was found in the severe sepsis group (47.5% vs 65.5%, P = 0.033) . However, no significant difference was shown in the (CA+AA) genotype frequency between the shock group and the non-shock group as well as between the death group and the non-death group (61.8% vs 57.1%, P = 0.221; 56.8% vs 66.7%, P = 0.258) . (3) The unconditional logistic regression analysis showed that the mutation of C to A at the gene promoter locus of Nrf2-617 was associated with the increased onset risk of sepsis (OR = 1.584, 95%CI 1.025-2.447, P = 0.038) and the severity of sepsis (OR = 0.453, 95%CI 0.233-0.878, P = 0.019).


CONCLUSION
The mutation of C to A at the gene promoter locus of Nrf2-617 may increase the onset risk of sepsis and organ failure in sepsis patients, while not associated with the incidence of shock and the prognosis of sepsis.