Across TCGA pan-cancer cohorts, BPIFA1 RNA differs between tumor and matched normal tissue in 4 of 18 cancer types tested, making tumor–normal expression one of BPIFA1’s most consistent transcriptional readouts.
The strongest signal is observed in lung squamous cell carcinoma (LUSC), where BPIFA1 RNA is repressed in tumor relative to normal tissue. In most cancer types BPIFA1 is over-expressed in tumor, although a few such as LUSC and HNSC show the opposite, repressed pattern.
LUSC, HNSC, and LUAD are the cancer types where BPIFA1 tumor–normal differential expression is most reproducible.