Across TCGA pan-cancer cohorts, APOBEC1 mass-spec protein is linked to patient survival in 5 of 34 cancer types, making it a survival-associated APOBEC1 data layer compared with 21 for mass-spec protein and 5 for mutation status.
The strongest signal is observed in lung adenocarcinoma (LUAD), where higher APOBEC1 mass-spec protein is associated with better disease-free survival. In most high-consensus cancer types, elevated APOBEC1 expression acts as an unfavorable survival marker, although some lineages such as LUAD and CCRCC show a favorable association.
LUAD, UCEC, and LSCC are the cancer types where APOBEC1 mass-spec protein most reproducibly stratifies survival.