LCN2 and acute kidney injury: Although they did not show the correlation between the expression of these genes and both acute‐phase serum creatinine and kidney fibrosis, our results showed the correlation between NGAL and MCP‐1 mRNA expression and both acute‐phase serum creatinine and tubulointerstitial fibrosis, suggesting that NGAL and MCP‐1 in kidney tissue might not only predict AKI severity but also be good biomarkers to determine kidney fibrosis severity.