MCM3AP and nonpapillary renal cell carcinoma: Also, the correlation analysis of MCM3AP-AS1 and DPP4 expression was performed in 78 ccRCC tumor tissues (Figure 4F), and MCM3AP-AS1 and DPP4 were found to be positively-correlated in ccRCC tumor tissues (r = 0.519, p = 0.001).