Among AKI patients without CKD (n = 65), the median [IQR] urine CK-18 M30 level was 57.3 [32.0–107.0] and of non-AKI patients (n = 113) 58.3 [37.4–107.2] U/l, p = 0.701. The gene discussed is KRT18; the disease is chronic kidney disease.