Across TCGA pan-cancer cohorts, APTX mass-spec protein is linked to patient survival in 4 of 34 cancer types, making it a survival-associated APTX data layer compared with 23 for mass-spec protein and 4 for mutation status.
The strongest signal is observed in lung adenocarcinoma (LUAD), where higher APTX mass-spec protein is associated with better overall survival. In most high-consensus cancer types, elevated APTX expression acts as an unfavorable survival marker, although some lineages such as LUAD and CCRCC show a favorable association.
LUAD, CCRCC, and LSCC are the cancer types where APTX mass-spec protein most reproducibly stratifies survival.