^
    3years
    Merging all GI Cancers together in this analysis might be a confounder. Eg. Comparisons in E/GEJ Adenocarcinoma have shown that 28.8 detects ~30% more PD-L1 CPS>5 patients. ()
    Clinical
    |
    PD-L1 (Programmed death ligand 1)
    |
    PD-L1 IHC 28-8 pharmDx