Moreover, the ccRCC patients were divided into low- and high-expression groups based on the median expression value of TTC13, and the K–M survival curve analysis showed that the overall survival of the high-expression group was worse than that in the low-expression group (P < 0.001) (Fig. 1I), indicating the negative association between TTC13 level and patient overall survival. Here, TTC13 is linked to nonpapillary renal cell carcinoma.