However, in the 6 PDOs assessed for tumor antigen presentation (indicated by the levels of HLA‐A,B,C on the cell surface), 4 PDOs (PDO2, PDO4, PDO5, and PDO8) exhibited remarkably higher levels of HLA‐A,B,C after treatment with ITF2357 or I‐BET151, while no changes were observed for PDO1 and PDO3 after the treatment due to their extremely low levels of HLA‐A,B,C (Figures 8D,E). Here, HLA-A is linked to neoplasm.