CXCL8 and nonpapillary renal cell carcinoma: In resected ccRCC, high transcript-level expression of the IL-8 gene evaluated in surgical tissue was significantly (P = .001) associated with worse OS in the Firehose Legacy dataset and showed a non-significant trend toward association with worse OS in the TCGA dataset (TCGA Nature 2013); no significant impact on disease-free survival (DFS) was observed in the only dataset in which data on this outcome were available (Firehose Legacy); (Figure S7, see online supplementary material for a color version of this figure).