Across TCGA pan-cancer cohorts, SNN mass-spec protein is linked to patient survival in 1 of 34 cancer types, making it a survival-associated SNN data layer compared with 19 for mass-spec protein and 3 for mutation status.
The strongest signal is observed in glioblastoma multiforme (GBM), where higher SNN mass-spec protein is associated with better disease-free survival. In most high-consensus cancer types, elevated SNN expression acts as an unfavorable survival marker, although some lineages such as GBM show a favorable association.
GBM are the cancer types where SNN mass-spec protein most reproducibly stratifies survival.