Across TCGA pan-cancer cohorts, IMP4 mass-spec protein is linked to patient survival in 5 of 34 cancer types, making it a survival-associated IMP4 data layer compared with 25 for mass-spec protein and 3 for mutation status.
The strongest signal is observed in clear cell renal cell carcinoma (CCRCC), where higher IMP4 mass-spec protein is associated with worse disease-free survival. In most high-consensus cancer types, elevated IMP4 expression acts as an unfavorable survival marker, although some lineages such as LSCC show a favorable association.
CCRCC, PDAC, and LSCC are the cancer types where IMP4 mass-spec protein most reproducibly stratifies survival.