Across TCGA pan-cancer cohorts, MMP13 mass-spec protein differs between tumor and matched normal tissue in 2 of 18 cancer types tested, making tumor–normal expression one of MMP13’s most consistent transcriptional readouts.
The strongest signal is observed in head and neck squamous cell carcinoma (HNSC), where MMP13 mass-spec protein is more highly expressed in tumor relative to normal tissue. In most cancer types MMP13 is over-expressed in tumor.
HNSC and LSCC are the cancer types where MMP13 tumor–normal differential expression is most reproducible.