For instance, research has demonstrated that ZNF263 interacts with two splice sites (P3 and P4) on the FOXP1 promoter, thereby regulating the expression of circFOXP1 in renal cell carcinoma (RCC) cells, which promotes RCC cell proliferation, migration, invasion, and the Warburg effect (48). Here, FOXP1 is linked to renal cell carcinoma.