Across TCGA pan-cancer cohorts, SF3A1 mass-spec protein is linked to patient survival in 5 of 34 cancer types, making it a survival-associated SF3A1 data layer compared with 29 for mass-spec protein and 4 for mutation status.
The strongest signal is observed in head and neck squamous cell carcinoma (HNSC), where higher SF3A1 mass-spec protein is associated with worse overall survival. In most high-consensus cancer types, elevated SF3A1 expression acts as an unfavorable survival marker, although some lineages such as COAD and LUAD show a favorable association.
HNSC, COAD, and LUAD are the cancer types where SF3A1 mass-spec protein most reproducibly stratifies survival.