NUF2 and nonpapillary renal cell carcinoma: GEPIA (Fig. 3A, P = 7.1E − 05), LinkedOmics analysis (Fig. 3B, P < 0.01) and Kaplan–Meier plotter analysis (Fig. 3C, P = 2.4e − 15) showed that high NUF2 expression was linked to poor OS in ccRCC, indicating that NUF2 is an independent prognostic factor and may be meaningful biomarker in ccRCC patients.