Last week MedImmune Ltd., the biotech arm of AstraZeneca plc (NYSE: AZN), announced two placements for its investigational compound, MEDI4736. The first announcement was with Juno Therapeutics Inc. (NASDAQ: JUNO), which signed an non-exclusive agreement to test its own investigational CD19-directed chimeric antigen receptor (CAR) T cell candidates with MedImmune’s programmed cell death ligand 1 (PD-L1) immune check point inhibitor, MEDI4736, aiming for a combination therapy. No financial details were disclosed on that, but the next day, MedImmune announced a deal with a Swiss subsidiary of Celgene Corp. (NASDAQ: CELG), worth an upfront payment of $450 million from Celgene, to investigate MEDI4736’s adequacy as a combination therapy with Celgene’s pipeline. Other assets could become part of this investigation.