Mortality in adult intensive care patients with severe systemic inflammatory response syndromes is strongly associated with the hypo-immune TNF -238A polymorphism.
The systemic inflammatory response syndrome (SIRS) is associated with activation of innate immunity. We studied the association between mortality and measures of disease severity in the intensive care unit (ICU) and functional polymorphisms in genes coding for Toll-like receptor 4 (TLR4), macrophage migratory inhibitory factor (MIF), tumour necrosis factor (TNF) and lymphotoxin-alpha (LTA). Two hundred thirty-three patients with severe SIRS were recruited from one general adult ICU in a tertiary centre in the UK. DNA from patients underwent genotyping by 5' nuclease assay. Genotype was compared to phenotype. Primary outcome was mortality in ICU. Minor allele frequencies were TLR4 +896G 7%, MIF 173C 16%, TNF -238A 10% and LTA +252G 34%. The frequency of the hypoimmune minor allele TNF -238A was significantly higher in patients who died in ICU compared to those who survived (p = 0.0063) as was the frequency of the two haplotypes LTA +252G, TNF -1031T, TNF -308G, TNF -238A and LTA +252G, TNF-1031T, TNF-308A and TNF-238A (p = 0.0120 and 0.0098, respectively). These findings re-enforce the view that a balanced inflammatory/anti-inflammatory response is the most important determinant of outcome in sepsis. Genotypes that either favour inflammation or its counter-regulatory anti-inflammatory response are likely to influence mortality and morbidity.
Pappachan
John V
JV
Pediatric Intensive Care Unit, Southampton General Hospital, Southampton, UK.
Coulson
Tim G
TG
Child
Nicholas J A
NJ
Markham
David J
DJ
Nour
Sarah M
SM
Pulletz
Mark C K
MC
Rose-Zerilli
Matthew J
MJ
de Courcey-Golder
Kim
K
Barton
Sheila J
SJ
Yang
Ian A
IA
Holloway
John W
JW
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D004739:England / Q000453:epidemiology; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006239:Haplotypes; D017052:Hospital Mortality; D006801:Humans; D007113:Immunity, Innate / Q000235:genetics; D007249:Inflammation / Q000235:genetics / Q000276:immunology; D007362:Intensive Care Units / Q000706:statistics & numerical data; D019746:Intramolecular Oxidoreductases / Q000235:genetics; D008233:Lymphotoxin-alpha / Q000235:genetics* / Q000276:immunology; D008263:Macrophage Migration-Inhibitory Factors / Q000235:genetics; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D018746:Systemic Inflammatory Response Syndrome / Q000235:genetics* / Q000276:immunology / Q000401:mortality; D051197:Toll-Like Receptor 4 / Q000235:genetics; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics* / Q000276:immunology; D055815:Young Adult
D008233:Lymphotoxin-alpha; D008263:Macrophage Migration-Inhibitory Factors; C495345:TLR4 protein, human; D051197:Toll-Like Receptor 4; D014409:Tumor Necrosis Factor-alpha; D019746:Intramolecular Oxidoreductases; C515598:MIF protein, human