First, we investigated the differentially expressed SFs in BLCA, and we distinguished eight differential SFs: CELF2, MBNL1, NOVA1, PTBP2, KHDRBS2, ELAVL2, ELAVL3, and ELAVL4. Of these, ELAV2, ELAVL3, and ELAVL4 were upregulated in BLCA, and CELF2, MBNL1, NOVA1, PTBP2, and KHDRBS2 were downregulated (Figure 6A). Here, NOVA1 is linked to bladder transitional cell carcinoma.