In clear cell renal cell carcinoma (CCRCC), B7-H3 was found to promote the EMT process in CCRCC cells by activating the PI3K/AKT and p38/ERK mitogen‐activated protein kinase (MAPK) signaling pathways, which are mediated by fibronectin [70]. Here, FN1 is linked to nonpapillary renal cell carcinoma.