Across TCGA pan-cancer cohorts, ARL5C RNA differs between tumor and matched normal tissue in 3 of 18 cancer types tested, making tumor–normal expression one of ARL5C’s most consistent transcriptional readouts.
The strongest signal is observed in breast invasive carcinoma (BRCA), where ARL5C RNA is repressed in tumor relative to normal tissue. In most cancer types ARL5C is over-expressed in tumor, although a few such as BRCA and KICH show the opposite, repressed pattern.
BRCA, KICH, and COAD are the cancer types where ARL5C tumor–normal differential expression is most reproducible.