Across TCGA pan-cancer cohorts, H1-1 mass-spec protein is linked to patient survival in 5 of 34 cancer types, making it a survival-associated H1-1 data layer compared with 17 for mass-spec protein and 3 for mutation status.
The strongest signal is observed in pancreatic ductal adenocarcinoma (PDAC), where higher H1-1 mass-spec protein is associated with better disease-free survival. In most high-consensus cancer types, elevated H1-1 expression acts as an unfavorable survival marker, although some lineages such as PDAC and LUAD show a favorable association.
PDAC, HNSC, and CCRCC are the cancer types where H1-1 mass-spec protein most reproducibly stratifies survival.