Across TCGA pan-cancer cohorts, NAALAD2 mass-spec protein differs between tumor and matched normal tissue in 2 of 18 cancer types tested, making tumor–normal expression one of NAALAD2’s most consistent transcriptional readouts.
The strongest signal is observed in lung adenocarcinoma (LUAD), where NAALAD2 mass-spec protein is repressed in tumor relative to normal tissue. In most cancer types NAALAD2 is over-expressed in tumor, although a few such as LUAD and PDAC show the opposite, repressed pattern.
LUAD and PDAC are the cancer types where NAALAD2 tumor–normal differential expression is most reproducible.