Across TCGA pan-cancer cohorts, NKX2-4 RNA differs between tumor and matched normal tissue in 4 of 18 cancer types tested, making tumor–normal expression one of NKX2-4’s most consistent transcriptional readouts.
The strongest signal is observed in kidney renal papillary cell carcinoma (KIRP), where NKX2-4 RNA is more highly expressed in tumor relative to normal tissue. In most cancer types NKX2-4 is over-expressed in tumor, although a few such as THCA show the opposite, repressed pattern.
KIRP, THCA, and LUSC are the cancer types where NKX2-4 tumor–normal differential expression is most reproducible.