RARA and uterine carcinosarcoma: Univariate Cox regression analysis of OS in pan-cancer patients shows that the expression of RARA-AS1 is significantly associated with poor survival outcomes in GBM, KICH, KIRP, Brain lower grade glioma (LGG), Sarcoma (SARC), Thymoma (THYM), Uterine carcinosarcoma (UCS), and Uveal melanoma (UVM).