Across TCGA pan-cancer cohorts, HTR5A-AS1 RNA differs between tumor and matched normal tissue in 1 of 18 cancer types tested, making tumor–normal expression one of HTR5A-AS1’s most consistent transcriptional readouts.
The strongest signal is observed in kidney renal clear cell carcinoma (KIRC), where HTR5A-AS1 RNA is repressed in tumor relative to normal tissue. In most cancer types HTR5A-AS1 is over-expressed in tumor, although a few such as KIRC show the opposite, repressed pattern.
KIRC are the cancer types where HTR5A-AS1 tumor–normal differential expression is most reproducible.