MCM3AP and nonpapillary renal cell carcinoma: The expression of MCM3AP-AS1 in paraneoplastic tissues and ccRCC tissues was assayed by RT-qPCR, and it was found that the expression of MCM3AP-AS1 was upregulated in ccRCC tissues, and the higher the grade of ccRCC tissues, the upregulation was more obvious, and the expression of MCM3AP-AS1 in ccRCC tumors >7 cm was significantly higher than that in tumors ≤7 cm [44].