RNF31 expression was related to different immune subtypes in BLCA, BRCA, CESC, COAD, ESCA, HNSC, kidney renal clear cell carcinoma (KIRC), LIHC, LUAD, mesothelioma (MESO), ovarian serous cystadenocarcinoma (OV), pancreatic adenocarcinoma (PAAD), pheochromocytoma and paraganglioma (PCPG), PRAD, READ, sarcoma (SARC), skin cutaneous melanoma (SKCM), STAD, testicular germ cell tumors (TGCT), THCA, UCEC and uterine carcinosarcoma (UCS). This evidence concerns the gene RNF31 and ovarian serous cystadenocarcinoma.