Figure 2 shows ROC curves of models for the prediction of early bacterial infection. Model 1 included the MBL2 rs11003125 genotype and clinical factors. Model 2 included the C7 rs6876739 genotype and was based on Model 1. In model 1, the AUC was 0.835, which included the donor MBL2 rs11003125 genotype and clinical factors. However, model 2, the combination of the donor C7 rs6876739 genotype, the donor MBL2 rs11003125 genotype, and the clinical factors, had a significantly better predictive value (0.912) than model 1 (P < 0.001). Here, MBL2 is linked to bacterial infectious disease.