Across TCGA pan-cancer cohorts, IGHG3 mass-spec protein is linked to patient survival in 6 of 34 cancer types, making it a survival-associated IGHG3 data layer compared with 21 for mass-spec protein and 5 for mutation status.
The strongest signal is observed in head and neck squamous cell carcinoma (HNSC), where higher IGHG3 mass-spec protein is associated with better overall survival. In most high-consensus cancer types, elevated IGHG3 expression acts as an unfavorable survival marker, although some lineages such as HNSC and LUAD show a favorable association.
HNSC, UCEC, and PDAC are the cancer types where IGHG3 mass-spec protein most reproducibly stratifies survival.