By using the GEPIA2 database (http://gepia2.cancer-pku.cn/#index) [24], we showed an association of IQGAP1 downregulation with shortening of overall survival (OS) in ccRCC at a hazard ratio (HR) 0.68 (p < 0.05) (Figure S1A). Here, IQGAP1 is linked to nonpapillary renal cell carcinoma.