CD274 and adenocarcinoma: We evaluated CD276 and PD-L1 in adenocarcinoma lung epithelial A549 p53-wt cells containing ATG5-wt and mutant ATG5-null cells, and in an isolate of A549-Atg5-null cells with re-introduced stably expressed green fluorescent protein (GFP)-Atg5 (Atg5-resc) (Supplementary Fig. 2).