“…As regards individual ICPMLs, the following have been reported to be associated with tumor cell EMT: PD-1 [ 54 , 55 ] PD-L1 [ 54 , 55 , 56 , 57 ], PD-L2 [ 54 , 55 ], B7-H3 [ 55 ], B7-H4 [ 43 , 58 ], CTLA-4 [ 54 , 55 ], OX40 [ 54 ], CD47 [ 59 , 60 , 61 ], CD137 ligand [ 62 ], CD155 [ 44 ], FGL1 [ 46 ], T-cell immunoglobulin and mucin-domain containing-3 (TIM-3) [ 55 , 63 ] and B- and T-lymphocyte attenuator (BTLA, CD272) [ 55 ]. Other ICPMLs, while not having been formally associated with EMT (e.g., CD70, galectin-9), are expressed by tumor cells displaying EMT-related functionalities [ 64 , 65 , 66 , 67 ].…”