Across TCGA pan-cancer cohorts, FGF6 RNA differs between tumor and matched normal tissue in 5 of 18 cancer types tested, making tumor–normal expression one of FGF6’s most consistent transcriptional readouts.
The strongest signal is observed in bladder urothelial carcinoma (BLCA), where FGF6 RNA is repressed in tumor relative to normal tissue. In most cancer types FGF6 is over-expressed in tumor, although a few such as BLCA and HNSC show the opposite, repressed pattern.
BLCA, HNSC, and PRAD are the cancer types where FGF6 tumor–normal differential expression is most reproducible.