Across TCGA pan-cancer cohorts, H3P31 RNA differs between tumor and matched normal tissue in 2 of 18 cancer types tested, making tumor–normal expression one of H3P31’s most consistent transcriptional readouts.
The strongest signal is observed in head and neck squamous cell carcinoma (HNSC), where H3P31 RNA is more highly expressed in tumor relative to normal tissue. In most cancer types H3P31 is over-expressed in tumor, although a few such as KIRC show the opposite, repressed pattern.
HNSC and KIRC are the cancer types where H3P31 tumor–normal differential expression is most reproducible.