Across TCGA pan-cancer cohorts, AP2S1 mass-spec protein differs between tumor and matched normal tissue in 4 of 18 cancer types tested, making tumor–normal expression one of AP2S1’s most consistent transcriptional readouts.
The strongest signal is observed in clear cell renal cell carcinoma (CCRCC), where AP2S1 mass-spec protein is repressed in tumor relative to normal tissue. In most cancer types AP2S1 is over-expressed in tumor, although a few such as CCRCC and LUAD show the opposite, repressed pattern.
CCRCC, LUAD, and LSCC are the cancer types where AP2S1 tumor–normal differential expression is most reproducible.