Across TCGA pan-cancer cohorts, CADM2 mass-spec protein differs between tumor and matched normal tissue in 2 of 18 cancer types tested, making tumor–normal expression one of CADM2’s most consistent transcriptional readouts.
The strongest signal is observed in colon adenocarcinoma (COAD), where CADM2 mass-spec protein is repressed in tumor relative to normal tissue. In most cancer types CADM2 is over-expressed in tumor, although a few such as COAD and HNSC show the opposite, repressed pattern.
COAD and HNSC are the cancer types where CADM2 tumor–normal differential expression is most reproducible.