• Sophie Cousin and Antoine Italiano.
• Early Phase Trials Unit, Institut Bergonié, Bordeaux, France. Department of Medicine, Institut Bergonié, Bordeaux, France.
• Clin Cancer Res. 2016 Sep 15; 22 (18): 4550-5.

AbstractThe emergence of immune checkpoint inhibitors for solid tumor treatments represents a major oncologic advance. Since the approval of ipilimumab, a cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4) antibody, for the treatment of metastatic melanoma, many drugs, especially those targeting PD-1/PD-L1, have demonstrated promising antitumor effects in many types of cancer. By reactivating the immune system, these immunotherapies have led to the development of new toxicity profiles, also called immune-related adverse events (irAE). IrAEs can involve many organ systems, and their management is radically different from that of cytotoxic drugs; irAEs require immunosuppressive treatments, such as corticoids or TNFα antibody. In addition, the occurrence of irAEs has raised significant questions. Here, we summarize progress that has been made toward answering these questions, focusing on (i) the impact of immunotherapy dose on irAE occurrence, (ii) the correlation between irAE and patient outcome, (iii) the safety of immune checkpoint inhibitors in patients already treated for autoimmune disease, and (iv) the suspected effect on tumor growth of steroids used for the management of irAEs. Clin Cancer Res; 22(18); 4550-5. ©2016 AACR. ©2016 American Association for Cancer Research.

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