Across TCGA pan-cancer cohorts, CPA4 mass-spec protein is linked to patient survival in 3 of 34 cancer types, making it a survival-associated CPA4 data layer compared with 24 for mass-spec protein and 4 for mutation status.
The strongest signal is observed in head and neck squamous cell carcinoma (HNSC), where higher CPA4 mass-spec protein is associated with better disease-free survival. In most high-consensus cancer types, elevated CPA4 expression acts as an unfavorable survival marker, although some lineages such as HNSC show a favorable association.
HNSC, PDAC, and CCRCC are the cancer types where CPA4 mass-spec protein most reproducibly stratifies survival.