CD274 and pneumonitis: Naidoo et al. described clinical, radiologic, and pathologic features and management of 43 cases of pneumonitis as a result of anti–PD-1/PD-L1 mAbs from two separate institutions (Memorial Sloan Kettering Cancer Center: advanced solid cancers, 2009 to 2014, and Melanoma Institute of Australia: melanomas only) [12].