ROC AUC - Area under the receiver operating characteristic curve. CI - confidence interval. MASCC - Multinational Association for Supportive Care in Cancer. PCT – procalcitonin. LBP - lipopolysaccharide binding protein (LBP). Hanley and Mc Neil test was used for comparison of ROC AUCs. P < 0.05 was considered statistically significant. This evidence concerns the gene LBP and cancer.