TIMP2 and acute kidney injury: Contrary to our results, Daubin et al. found that median urine [TIMP-2]*[IGFBP7] was higher in the transient AKI group than in the persistent AKI group (0.87 vs. 0.13 (ng/ml)2/1000 p = 0.035), and their global absolute values were much lower than those observed here.