Upon the examination of the ROC curves, it becomes apparent that only Tc cell (CD8+) values are significant in the early differentiation between sepsis and septic shock, as evidenced by the AUC (area under the curve) of 0.64, a cut-off value of 0.3, and a significance level of p = 0.028 on day 1 (Figure 6). This evidence concerns the gene CD8A and Sepsis.