FDX1 and osteosarcoma: Different cuproptosis‐related genes (CRGs) have different effects on osteosarcoma, for example, FDX1 expression contributes to tumor cell survival and drug resistance, and FDX1 can also promote the osteosarcoma cell metastasis but not related to the cancer cell proliferation and the overexpression of FDX1 can also inhibit the tumor immune microenvironment (TIM).110, 111