LCN2 and acute kidney injury: However, the comparison to previously known AKI genes showed increased expression of lipocalin‐2 (LCN2), in the AKI field often referred to as neutrophil gelatinase‐associated lipocalin (NGAL), which may indicate early renal tissue injury (Mishra et al., 2003) or an epithelial stress response (Fahling et al., 2019).