Motixafortide (BKT140 4-fluorobenzoyl) is an antagonist of CXCR4 (IC50: 1 nM). BMS-1166 hydrochloride is an inhibitor of PD-1 PD-L1 interaction (IC50: 1.4 nM). BMS-1166 rivalries the inhibitory effect of PD-1 PD-L1 immune checkpoint on T cell activation.