AQP1, a Colton blood group antigen system gene, was reported to be associated with poor prognosis in colon cancer and lung adenocarcinoma [25,26], while seven of the fifteen genes were reported to be prognostic in one tumor type (GCNT2, FUT7, FUT3, FUT2, DARC, CR1 and BSG, Figure 1C). Here, FUT2 is linked to lung adenocarcinoma.