The CEA content in the saliva of the control group was 61.9 [53.7; 69.0] ng/mL, in benign ovarian diseases 63.1 [53.2; 73.6] ng/mL and in ovarian cancer 66.3 [55.4; 79.7] ng/mL (Figure 3A). Here, CEACAM5 is linked to ovarian cancer.