Across TCGA pan-cancer cohorts, RBAK mass-spec protein differs between tumor and matched normal tissue in 3 of 18 cancer types tested, making tumor–normal expression one of RBAK’s most consistent transcriptional readouts.
The strongest signal is observed in lung adenocarcinoma (LUAD), where RBAK mass-spec protein is more highly expressed in tumor relative to normal tissue. In most cancer types RBAK is over-expressed in tumor, although a few such as HNSC show the opposite, repressed pattern.
LUAD, LSCC, and HNSC are the cancer types where RBAK tumor–normal differential expression is most reproducible.