After multivariate stepwise selection, IABP (OR: 8.267, 95% CI: 4.007–16.978), eGFR (OR: 0.982, 95% CI: 0.970–0.994) and ALB (OR: 0.875, 95% CI: 0.801–0.955), age (OR: 1.036, 95% CI: 1.006–1.007) were included in the final model for predicting CA-AKI (Table 3). This evidence concerns the gene ALB and acute kidney injury.