Across TCGA pan-cancer cohorts, COMT mass-spec protein is linked to patient survival in 3 of 34 cancer types, making it a survival-associated COMT data layer compared with 30 for mass-spec protein and 2 for mutation status.
The strongest signal is observed in clear cell renal cell carcinoma (CCRCC), where higher COMT mass-spec protein is associated with worse overall survival. In most high-consensus cancer types, elevated COMT expression acts as an unfavorable survival marker, although some lineages such as PDAC and UCEC show a favorable association.
CCRCC, PDAC, and UCEC are the cancer types where COMT mass-spec protein most reproducibly stratifies survival.