Across TCGA pan-cancer cohorts, SIK2 mass-spec protein is linked to patient survival in 4 of 34 cancer types, making it a survival-associated SIK2 data layer compared with 25 for mass-spec protein and 4 for mutation status.
The strongest signal is observed in lung adenocarcinoma (LUAD), where higher SIK2 mass-spec protein is associated with better overall survival. In most high-consensus cancer types, elevated SIK2 expression acts as an unfavorable survival marker, although some lineages such as LUAD and CCRCC show a favorable association.
LUAD, CCRCC, and HNSC are the cancer types where SIK2 mass-spec protein most reproducibly stratifies survival.