Some authors tested urinary (TIMP-2) x (IGFBP7) immediately after surgery and observed decreasing (TIMP-2) x (IGFBP7) values (when compared to baseline) without differences in (TIMP-2) x (IGFBP7) levels between patients with vs. without AKI [24,25], which is in line with our findings. The gene discussed is IGFBP7; the disease is acute kidney injury.