title: PD-1/PD-L1 inhibitors.
abstract: Tumors may adopt normal physiologic checkpoints for immunomodulation leading to an imbalance between tumor growth and host surveillance. Antibodies targeting the PD-1/PD-L1 checkpoint have shown dynamic and durable tumor regressions, suggesting a rebalancing of the host-tumor interaction. Nivolumab and pembrolizumab are the anti-PD-1 antibodies that are currently the furthest in clinical development, and anti-PD-L1 agents under investigation include MPDL3280A, MEDI4736, and BMS-936559. These agents have been used to treat advanced melanoma, non-small cell lung cancer, renal cell carcinoma, bladder cancer and Hodgkin lymphoma, amongst other tumor types. In this article, we review the updated response results for early clinical trials, note recent FDA actions regarding this class of agents, and summarize results across trials looking at PD-L1 status as a predictor of response to anti-PD-1/PD-L1.
authors.affiliation: Department of Dermatology, Johns Hopkins Medical Institutions, Baltimore, MD, USA.
authors.forename: Joel
authors.initials: J
authors.lastname: Sunshine
authors.affiliation: Department of Dermatology, Johns Hopkins Medical Institutions, Baltimore, MD, USA; Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, USA; Department of Oncology, Johns Hopkins Medical Institutions, Baltimore, MD, USA. Electronic address: jtaube1@jhmi.edu.
authors.forename: Janis M
authors.initials: JM
authors.lastname: Taube
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000494:pharmacology* / Q000627:therapeutic use; D000970:Antineoplastic Agents / Q000494:pharmacology* / Q000627:therapeutic use; D060890:B7-H1 Antigen / Q000037:antagonists & inhibitors* / Q000276:immunology; D006801:Humans; D009369:Neoplasms / Q000188:drug therapy / Q000276:immunology; D061026:Programmed Cell Death 1 Receptor / Q000037:antagonists & inhibitors* / Q000276:immunology
chemical_list: D000911:Antibodies, Monoclonal; D000970:Antineoplastic Agents; D060890:B7-H1 Antigen; C423236:CD274 protein, human; C105992:PDCD1 protein, human; D061026:Programmed Cell Death 1 Receptor