Patients who were either homozygous or heterozygous carriers of the MIF CATT7 allele had a significantly increased risk of AKI after cardiac surgery when compared to all other patients (22.7% vs. 12.8%, OR 2.01, 95% CI 1.40–2.88, p = 0.0001) (Table 4). Here, MIF is linked to acute kidney injury.