Across TCGA pan-cancer cohorts, FAM3C mass-spec protein is linked to patient survival in 6 of 34 cancer types, making it a survival-associated FAM3C data layer compared with 25 for mass-spec protein and 2 for mutation status.
The strongest signal is observed in clear cell renal cell carcinoma (CCRCC), where higher FAM3C mass-spec protein is associated with worse overall survival. In most high-consensus cancer types, elevated FAM3C expression acts as an unfavorable survival marker, although some lineages such as HNSC and GBM show a favorable association.
CCRCC, HNSC, and PDAC are the cancer types where FAM3C mass-spec protein most reproducibly stratifies survival.