Across TCGA pan-cancer cohorts, ST3GAL5 mass-spec protein differs between tumor and matched normal tissue in 3 of 18 cancer types tested, making tumor–normal expression one of ST3GAL5’s most consistent transcriptional readouts.
The strongest signal is observed in lung squamous cell carcinoma (LSCC), where ST3GAL5 mass-spec protein is repressed in tumor relative to normal tissue. In most cancer types ST3GAL5 is over-expressed in tumor, although a few such as LSCC and LUAD show the opposite, repressed pattern.
LSCC, PDAC, and LUAD are the cancer types where ST3GAL5 tumor–normal differential expression is most reproducible.