Rechallenging nivolumab following immune checkpoint inhibitor-induced pericarditis.

We report a case of recurrent pericarditis as an immune-related adverse event in a 47-year-old man with de novo metastatic renal cell carcinoma. After first-line treatment with sunitinib failed, he received three cycles of nivolumab and developed pericarditis following each cycle. The third cycle was accompanied by colchicine as a secondary prophylaxis. Pericarditis is an uncommon and potentially life-threatening immune-related adverse event, if not managed promptly.