MFAP2 and bladder transitional cell carcinoma: Based on further analysis of the relationship between MFAP2 mRNA expression levels and cancer stage or grade, the results suggested that MFAP2 was positively correlated with the advanced BLCA stage in both GEPIA2 and TISIDB (see Figures 3(a) and 3(b)), and the TISIDB database of MFAP2 was positively correlated with the advanced CESC, KIRC, LGG, and LIHC grades (see Figure 3(c)).