Across TCGA pan-cancer cohorts, GM2AP2 RNA differs between tumor and matched normal tissue in 5 of 18 cancer types tested, making tumor–normal expression one of GM2AP2’s most consistent transcriptional readouts.
The strongest signal is observed in kidney chromophobe (KICH), where GM2AP2 RNA is repressed in tumor relative to normal tissue. In most cancer types GM2AP2 is over-expressed in tumor, although a few such as KICH and KIRC show the opposite, repressed pattern.
KICH, KIRC, and KIRP are the cancer types where GM2AP2 tumor–normal differential expression is most reproducible.