CXCL1 and renal cell carcinoma: We found that RCC patients with low transcriptional levels of CXCL1 (p = 0.00087), CXCL2 (p = 0.0047), CXCL3 (p = 0.0012), CXCL5 (p = 0.021), and CXCL13 (p = 0.025) were significantly associated with longer overall survival (Figure 6).