Across TCGA pan-cancer cohorts, XCL1 RNA differs between tumor and matched normal tissue in 10 of 18 cancer types tested, making tumor–normal expression one of XCL1’s most consistent transcriptional readouts.
The strongest signal is observed in head and neck squamous cell carcinoma (HNSC), where XCL1 RNA is more highly expressed in tumor relative to normal tissue. In most cancer types XCL1 is over-expressed in tumor, although a few such as THCA and COAD show the opposite, repressed pattern.
HNSC, KIRC, and BLCA are the cancer types where XCL1 tumor–normal differential expression is most reproducible.
RNA tumor vs normal associations by lineage
Ranked by sampling consensus. Fold-change is the tumor-versus-normal difference in XCL1 RNA (log2); positive values indicate higher expression in tumor. p-values are from the differential-expression test.