IL20RA and ovarian serous carcinoma: To confirm the role of IL20RA in OC metastasis, we knocked down IL20RA in SK-OV-3 cells, which had relatively high level of IL20RA (Figure 1C,, Figure 1—figure supplement 1A, B), and reconstituted IL20RA in highly metastatic murine epithelial OC cell ID8, which was isolated from peritoneal ascites of ID8-injected C57BL/6 mice as described by Ward and colleagues (Ward et al., 2013) with high-grade serous ovarian carcinoma (HGSOC)-like characteristics (Diaz Osterman et al., 2019) and had very low level of endogenous IL20RA (Figure 1—figure supplement 1A,, Figure 1D).