Across TCGA pan-cancer cohorts, RAP1A mass-spec protein is linked to patient survival in 5 of 34 cancer types, making it a survival-associated RAP1A data layer compared with 21 for mass-spec protein and 4 for mutation status.
The strongest signal is observed in lung adenocarcinoma (LUAD), where higher RAP1A mass-spec protein is associated with worse disease-free survival. In most high-consensus cancer types, elevated RAP1A expression acts as an unfavorable survival marker, although some lineages such as HNSC show a favorable association.
LUAD, UCEC, and LSCC are the cancer types where RAP1A mass-spec protein most reproducibly stratifies survival.