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