CA12 and acute kidney injury: GO analysis showed an increase in the following molecular functions in patients with sepsis-AKI compared to matched pairs: immunoglobulin receptor binding (GO:0034987) (p = 0.041), carbonate dehydratase activity (GO:0004089) (p = 0.009) and platelet-derived growth factor receptor binding (GO:0005161) (p = 0.009) (Table 4).