Also, the transcriptional expressions of CXCLs family members were correlated with patients' individual cancer stages and nodal metastasis status, especially for CXCL2, CXCL3, CXCL4, CXCL7, CXCL9, CXCL10, CXCL11, and CXCL12 (shown in Figures 6 and 7). This evidence concerns the gene PPBP and cancer.