By analyzing The Cancer Genome Atlas (TCGA) data using log2 (tags per million + 1) for log scale, we found that CXCL13 expression was significantly higher in lung adenocarcinoma (LUAD) and lung squamous cell carcinoma (LUSC) than that in normal lung tissues (Figure 1A). Here, CXCL13 is linked to squamous cell lung carcinoma.