Across TCGA pan-cancer cohorts, SOX21 mass-spec protein is linked to patient survival in 1 of 34 cancer types, making it a survival-associated SOX21 data layer compared with 26 for mass-spec protein and 2 for mutation status.
The strongest signal is observed in lung squamous cell carcinoma (LSCC), where higher SOX21 mass-spec protein is associated with worse overall survival. In most high-consensus cancer types, elevated SOX21 expression acts as an unfavorable survival marker.
LSCC are the cancer types where SOX21 mass-spec protein most reproducibly stratifies survival.