A recent study by Sato et al,43 which utilized the PD‐L1 clone E1L3N (Cell Signaling Technology), revealed higher rates of PD‐L1 expression in SDC tumor cells, with 4 of 18 cases showing high expression (defined as greater than 10%) and 5 of 18 cases showing low expression (1%‐9%); moreover high PD‐L1 expression strongly correlated with shorter overall survival. The gene discussed is CD274; the disease is neoplasm.