Across TCGA pan-cancer cohorts, SARNP mass-spec protein differs between tumor and matched normal tissue in 4 of 18 cancer types tested, making tumor–normal expression one of SARNP’s most consistent transcriptional readouts.
The strongest signal is observed in head and neck squamous cell carcinoma (HNSC), where SARNP mass-spec protein is repressed in tumor relative to normal tissue. In most cancer types SARNP is over-expressed in tumor, although a few such as HNSC show the opposite, repressed pattern.
HNSC, COAD, and LSCC are the cancer types where SARNP tumor–normal differential expression is most reproducible.