Fig. 4.

Box plot analysis of IL-15 expression in the sera of patients with G3 tumor. IL-15 release was significantly higher in the G3 patient collective who died during the follow-up period in contrast to low IL-15 levels in living patients at follow up with a G3 tumor (p = 0.001). The range amongst the 25th and 75th percentiles is demonstrated by boxes with a horizontal line at the median. The bars display the 5th and 95th percentiles. Circles specify values more than 1.5 box lengths. Asterisks specify values (marked with a number) more than 3.0 box lengths from the 75th percentile. Receiver operator curve analysis of sensitivity versus specificity gave an area under the curve (AUC) of 0.725