CXCL11 and neoplasm: Furthermore, we found upregulation of CXCL11 expression in tumor tissue compared with adjacent normal tissue (Figure 3F) in the COAD single-cell RNA-seq datasets GSE146771, and CXCL11 expression was positively correlated with PD-L1 (r = 0.66, P < 0.001; Figure 3G).