Thanks Lykiri, I believe these are all different collaborations between UCLA, Merck (Keytruda / Pembrolizumab) and Bristol Meyers Squibb (BMS) (Opdivo / Nivolumab).
Also, I believe the studies are different, some combine DCVax-L + PD-1 inhibitor + CSF-1R inhibitor, and then others also add poly-ICLC