Interleukin 6 and Liver Disease Mortality

Briefly noted: J Remmler et al. Clin Gastroenterol Hepatol 2018; 16: 730-7.  This retrospective study with 474 patients showed that blood levels of interleukin 6 were associated with mortality.  In this cohort, those with levels in the lowest quartile (< 5.3 pg/mL) had zero fatalities within 1 year.  In those with the highest quartile (37 pg/mL or more), had a 67.7% mortality rate within 1 year.  The associated editorial (pg 630-32) notes that IL6 functions include liver regeneration, infection defense, and metabolic homeostasis.  “IL6 is synthesized during inflammatory conditions…persistent activation of the IL6 pathway may have detrimental effects in the livers and in other tissues.”

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