CD274 and ovarian cancer: Durable tumor regression was observed in advanced melanoma, NSCLC, RCC and ovarian cancer patients with BMS-936559 treatment, and the adverse events were tolerated.102 MPDL3280A, a humanized PD-L1-blocking mAb, showed impressive anti-tumor effects in metastatic urothelial bladder cancer, the tolerability and efficacy in other advanced solid tumors were also acceptable.103 MEDI4736 is a PD-L1 antibody with modified Fc domain, which was studied in phase I or Ib clinical trials for advanced solid tumors, the results are encouraging104 (Table 2).