Prognostic Impact of Interleukin-27 in Peripheral Artery Disease.

Atherosclerosis is a progressive arterial disease characterized by chronic inflammation, with interleukin-27 (IL-27) implicated as both a pro- and anti-inflammatory cytokine. This prospective cohort study evaluated association of circulating IL-27 levels in peripheral artery disease patients undergoing elective endovascular revascularization, with major adverse cardiovascular events (MACE) and major adverse limb events (MALE) over a median follow-up of 311 days. Elevated IL-27 levels were significantly associated with increased risk of MACE and MALE in unadjusted analyses. After adjusting for established cardiovascular and PAD risk factors, IL-27 remained an independent predictor of MACE (HR 2.95; p = 0.039), but not MALE. These findings indicate that elevated IL-27 levels are associated with unfavourable long-term prognosis.