Stromal cell infiltration, including cancer-associated fibroblasts (CAFs) and endothelial cells, had a negative correlation trend with NFS1 expression but without adequate statistical support (CAFs [r = −0.237; P = 3.06 × 10−6; Figure 5f] and endothelial cells [r = −0.158; P = 2.03 × 10−3; Figure 5e]). This evidence concerns the gene NFS1 and cancer.