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The purpose of this study was to investigate whether common variants across the nuclear factor erythroid 2-like 2 ( NFE2L2 ) gene contribute to the development of the acute respiratory distress syndrome (ARDS) in patients with severe sepsis.  NFE2L2  is involved in the response to oxidative stress, and it has been shown to be associated with the development of ARDS in trauma patients.    Methods  We performed a case–control study of 321 patients fulfilling international criteria for severe sepsis and ARDS who were admitted to a Spanish network of post-surgical and critical care units, as well as 871 population-based controls. Six tagging single-nucleotide polymorphisms (SNPs) of  NFE2L2  were genotyped, and, after further imputation of additional 34 SNPs, association testing with ARDS susceptibility was conducted using logistic regression analysis.    Results  After multiple testing adjustments, our analysis revealed 10 non-coding SNPs in tight linkage disequilibrium (0.75 ≤  r   2   ≤ 1) that were associated with ARDS susceptibility as a single association signal. One of those SNPs (rs672961) was previously associated with trauma-induced ARDS and modified the promoter activity of the  NFE2L2  gene, showing an odds ratio of 1.93 per T allele (95 % confidence interval, 1.17–3.18;  p  = 0.0089).    Conclusions  Our findings support the involvement of  NFE2L2  gene variants in ARDS susceptibility and reinforce further exploration of the role of oxidant stress response as a risk factor for ARDS in critically ill patients.

Common variants of NFE2L2 gene predisposes to acute respiratory distress syndrome in patients with severe sepsis