Elevated ferritin, mediated by IL-18 is associated with systemic inflammation and mortality in acute respiratory distress syndrome (ARDS). - Mehta P; Samanta RJ; Wick K; Coll RC; Mawhinney T; McAleavey PG; Boyle AJ; Conlon J; Shankar-Hari M; Rogers A; Calfee CS; Matthay MA; et al. (Thorax, 2024)