Various autoantibodies have been suggested as potential biomarkers of irAEs, such as myositis (anti‐acetylcholine receptor antibodies),27 thyroiditis (antithyroglobulin, antithyroid peroxidase),23, 28 hypophyitis (anti‐GNAL, anti‐ITM28),29 pneumonitis (anti‐CD74),29 or skin reactions (anti‐BP180).30 This evidence concerns the gene CD74 and thyroiditis.