As far as we know, the renal markers such as cystatin C, neutrophil gelatinase-associated lipocalin (NGAL), liver fatty acid-binding protein (L-FABP), kidney injury molecule 1 (KIM-1) and interleukin 18 (IL-18) are proposed as potential biomarkers for CI-AKI (7). The gene discussed is IL18; the disease is acute kidney injury.