Across TCGA pan-cancer cohorts, CPS1-IT1 RNA differs between tumor and matched normal tissue in 3 of 18 cancer types tested, making tumor–normal expression one of CPS1-IT1’s most consistent transcriptional readouts.
The strongest signal is observed in liver hepatocellular carcinoma (LIHC), where CPS1-IT1 RNA is repressed in tumor relative to normal tissue. In most cancer types CPS1-IT1 is over-expressed in tumor, although a few such as LIHC and CHOL show the opposite, repressed pattern.
LIHC, LUAD, and CHOL are the cancer types where CPS1-IT1 tumor–normal differential expression is most reproducible.