Across TCGA pan-cancer cohorts, L1CAM mass-spec protein is linked to patient survival in 5 of 34 cancer types, making it a survival-associated L1CAM data layer compared with 25 for mass-spec protein and 6 for mutation status.
The strongest signal is observed in uterine corpus endometrial carcinoma (UCEC), where higher L1CAM mass-spec protein is associated with worse disease-free survival. In most high-consensus cancer types, elevated L1CAM expression acts as an unfavorable survival marker, although some lineages such as GBM show a favorable association.
UCEC, PDAC, and HNSC are the cancer types where L1CAM mass-spec protein most reproducibly stratifies survival.