Serum concentrations of KL-6 and IL-6 were significantly higher in non-survivors (875 [403–1678] vs. 306 [158–1405] U/mL, p = 0.03 and 769 [285.5–906.4] vs. 38.6 [7–167.4] pg/mL, p = 0.004, respectively) (Figure 1); the same was found when death and/or IC were taken as the main outcome (903 [437–1773] vs. 317 [212–1396] U/mL, p = 0.04 and 701 [263.5–895.3] vs. 35.1 [7.4–178.2] pg/mL, p = 0.004, respectively), while no differences were observed between those who did or did not develop AKI (p = 0.525 and p = 0.654, respectively). Here, IL6 is linked to acute kidney injury.