GZMB and ovarian cancer: Regarding peritoneal fluid samples, the highest expression level of Granzyme B was observed in patients with ovarian cancer (median: 198, IQR: 72–451 pg/mL), which was significantly higher compared to patients with endometrial cancer (median: 81, IQR: 19–141 pg/mL, p = 0.02) [Fig. 8].