FDX1 and uterine carcinosarcoma: However, our data showed that there were positive correlations of FDX1 and immune cells infiltration in some tumors such as LGG, SARC and TGCT etc. Also, we noted that FDX1 expression was not correlated with the expression of any immune checkpoint genes in CHOL and uterine carcinosarcoma (UCS), and the levels of infiltrating immune cells in these two tumors were also almost completely independent of FDX1 expression.