CCL21 and neoplasm: Subsequently, WGCNA was performed using data from the TCGA training cohort to screen module genes associated with tumor staging, and analysis of univariate and LASSO Cox data have both shown that SLC22A25, SLC2A2, SLC41A3, SLC44A1, SLC48A1, SLC4A2, and SLC9A3R1 were prognostic SLC markers, which were validated using data from the ICGC.