Across TCGA pan-cancer cohorts, OCEL1 mass-spec protein differs between tumor and matched normal tissue in 3 of 18 cancer types tested, making tumor–normal expression one of OCEL1’s most consistent transcriptional readouts.
The strongest signal is observed in head and neck squamous cell carcinoma (HNSC), where OCEL1 mass-spec protein is repressed in tumor relative to normal tissue. In most cancer types OCEL1 is over-expressed in tumor, although a few such as HNSC and CCRCC show the opposite, repressed pattern.
HNSC, CCRCC, and LUAD are the cancer types where OCEL1 tumor–normal differential expression is most reproducible.