Across TCGA pan-cancer cohorts, PPDPF mass-spec protein is linked to patient survival in 6 of 34 cancer types, making it a survival-associated PPDPF data layer compared with 26 for mass-spec protein and 3 for mutation status.
The strongest signal is observed in head and neck squamous cell carcinoma (HNSC), where higher PPDPF mass-spec protein is associated with better overall survival. In most high-consensus cancer types, elevated PPDPF expression acts as an unfavorable survival marker, although some lineages such as HNSC and CCRCC show a favorable association.
HNSC, CCRCC, and UCEC are the cancer types where PPDPF mass-spec protein most reproducibly stratifies survival.