Across TCGA pan-cancer cohorts, MT4 RNA differs between tumor and matched normal tissue in 2 of 18 cancer types tested, making tumor–normal expression one of MT4’s most consistent transcriptional readouts.
The strongest signal is observed in uterine corpus endometrial carcinoma (UCEC), where MT4 RNA is more highly expressed in tumor relative to normal tissue. In most cancer types MT4 is over-expressed in tumor, although a few such as THCA show the opposite, repressed pattern.
UCEC and THCA are the cancer types where MT4 tumor–normal differential expression is most reproducible.