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