Serum CRP concentrations were not different among IRIS AKI grades (P = .18) and were as follows: 9.46 mg/dL (range, 0.83‐33.65) grade I, 8.12 mg/dL (range, 0.96‐46.53) grade II, 7.09 mg/dL (range, 0.44‐23.14) grade III, 7.77 mg/dL (range, 1.60‐35.43) grade IV, and 4.88 mg/dL (range, 3.38‐7.07) grade V. Similarly, WBC count did not differ among IRIS AKI grades (P = .80): 21 355/μL (range, 1580‐75 060) grade I, 21 080/μL (range, 570‐79 730) grade II, 16 555/μL (range, 8340‐44 700) grade III, 18 780/μL (range, 8820‐29 220) grade IV, and 16 900/μL (7710‐29 630) grade V. This evidence concerns the gene CRP and acute kidney injury.