In the CABG study, for which the endpoint was stage 2–3 AKI, the AUC (95% CI) of urinary [TIMP-2]•[IGFBP7] at 4 h after surgery was 0.86 (0.72–1.00) as compared to 0.83 (0.69–0.96) at 4 h after ICU admission for the same endpoint in our study. Here, TIMP2 is linked to acute kidney injury.