APOE and uterine carcinosarcoma: Based on GEO datasets, APOE expression was upregulated in seven tumors (DLBC, LGG, PAAD, STAD, TGCT, THYM, and Uterine Carcinosarcoma (UCS); Fig. 1C) and downregulated in three tumors (CHOL, LAML, PCPG; Fig. 1C).