Across TCGA pan-cancer cohorts, DDHD1 mass-spec protein differs between tumor and matched normal tissue in 4 of 18 cancer types tested, making tumor–normal expression one of DDHD1’s most consistent transcriptional readouts.
The strongest signal is observed in head and neck squamous cell carcinoma (HNSC), where DDHD1 mass-spec protein is more highly expressed in tumor relative to normal tissue. In most cancer types DDHD1 is over-expressed in tumor, although a few such as LSCC and LUAD show the opposite, repressed pattern.
HNSC, LSCC, and LUAD are the cancer types where DDHD1 tumor–normal differential expression is most reproducible.