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Published on: June 15, 2019
Innate immunity SNPs are associated with risk for severe sepsis after burn injury
Robert C Barber1, Ling-Yu E Chang, Brett D Arnoldo
1University of Texas Southwestern Medical Center, Department of Surgery, Dallas, TX 75390-9160, USA. robert.barber@utsouthwestern.edu
Objective:
To analyze allelic association with clinical outcome in a cohort of burn patients.
Patients:
Two hundred twenty-eight individuals with burns > or =15% total body surface area without significant non-burn related trauma who survived >48 hours post-admission were enrolled. One hundred fifty-nine of these patients were analyzed previously.
Methods:
Candidate polymorphisms within interleukin-1 beta (IL-1beta), interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-alpha), cellular differentiation marker 14 (CD14) and toll-like receptor 4 (TLR4) were evaluated by logistic regression analysis for association with increased risk for severe sepsis (sepsis plus organ dysfunction or shock).
Results:
After adjustment for age, burn size, ethnicity, gender and inhalation injury, alleles at TNF-alpha (308G, p=0.013), TLR4 (+896G, p=0.027), IL-6 (174C, p=0.040) and CD14 (159C, p=0.047) were significantly associated with an increased risk for severe sepsis.
Conclusions:
Carriage of variant alleles at immune response genes were associated with increased risk for severe sepsis after burn injury.
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