CCL17 expression information could add additional power into several existed RCC prognostic models (OS, P = 0.003, RFS, P = 0.002 for TNM; OS, P = 0.006, RFS, P = 0.001 for SSIGN; OS, P < 0.001, RFS, P = 0.001 for UISS) (Table 3). Here, CCL17 is linked to renal cell carcinoma.