Across TCGA pan-cancer cohorts, PSMB4 mass-spec protein is linked to patient survival in 5 of 34 cancer types, making it a survival-associated PSMB4 data layer compared with 23 for mass-spec protein and 6 for mutation status.
The strongest signal is observed in colon adenocarcinoma (COAD), where higher PSMB4 mass-spec protein is associated with worse disease-free survival. In most high-consensus cancer types, elevated PSMB4 expression acts as an unfavorable survival marker, although some lineages such as CCRCC and HNSC show a favorable association.
COAD, CCRCC, and HNSC are the cancer types where PSMB4 mass-spec protein most reproducibly stratifies survival.