PDCD1 and interstitial lung disease: The OP pattern was also the most common type observed in a retrospective multicenter study of patients with ILD related to treatment with ICIs, including cytotoxic T-lymphocyte-associated protein 4 (CTLA‐4) inhibitors, PD-1 inhibitors, and programmed cell death ligand 1 (PD-L1) inhibitors (23.4%, n = 15/64) [63].