RT Journal Article SR Electronic T1 Immune-related adverse events associated with immune checkpoint inhibitors: a call to action for collecting and sharing clinical trial and real-world data JF Journal for ImmunoTherapy of Cancer JO J Immunother Cancer FD BMJ Publishing Group Ltd SP e002896 DO 10.1136/jitc-2021-002896 VO 9 IS 7 A1 Reynolds, Kerry L A1 Arora, Shaily A1 Elayavilli, Ravikumar Komandur A1 Louv, William C A1 Schaller, Teilo H A1 Khandelwal, Aakanksha A1 Rothenberg, Mace A1 Khozin, Sean A1 Guidon, Amanda C A1 Dougan, Michael A1 Zubiri, Leyre A1 Petrillo, Laura A1 Sise, Meghan E A1 Villani, Alexandra-Chloe A1 Johnson, Douglas B A1 Rahma, Osama A1 Sharon, Elad YR 2021 UL http://jitc.bmj.com/content/9/7/e002896.abstract AB Immune checkpoint inhibitors (ICIs) have revolutionized the treatment of cancer, improving outcomes in patients with advanced malignancies. The use of ICIs in clinical practice, and the number of ICI clinical trials, are rapidly increasing. The use of ICIs in combination with other forms of cancer therapy, such as chemotherapy, radiotherapy, or targeted therapy, is also expanding. However, immune-related adverse events (irAEs) can be serious in up to a third of patients. Critical questions remain surrounding the characteristics and outcomes of irAEs, and how they may affect the overall risk–benefit relationship for combination therapies. This article proposes a framework for irAE classification and reporting, and identifies limitations in the capture and sharing of data on irAEs from current clinical trial and real-world data. We outline key gaps and suggestions for clinicians, clinical investigators, drug sponsors, patients, and other stakeholders to make these critical data more available to researchers for pooled analysis, to advance contemporary understanding of irAEs, and ultimately improve the efficacy of ICIs.