Across TCGA pan-cancer cohorts, PER1 mass-spec protein is linked to patient survival in 4 of 34 cancer types, making it a survival-associated PER1 data layer compared with 26 for mass-spec protein and 12 for mutation status.
The strongest signal is observed in pancreatic ductal adenocarcinoma (PDAC), where higher PER1 mass-spec protein is associated with worse disease-free survival. In most high-consensus cancer types, elevated PER1 expression acts as an unfavorable survival marker, although some lineages such as HNSC show a favorable association.
PDAC, LUAD, and LSCC are the cancer types where PER1 mass-spec protein most reproducibly stratifies survival.