CD274 and neoplasm: ,28 Epidermal growth factor receptor (EGFR),29,30,31 EpCAM,32,33 MUC1,34,35 CD44v6,36,37 B7H3,38 EphA2,39,40,41 CEA,42 MUC16,43,44 B7H4,45 NKG2DL,46 Claudin 18.2,47 CD19,48 CD20,49 PD-L1,50,51 HER2,52 cancer-associated fibroblasts,20,21 or tumor-associated macrophages53 have been described as targets for OV-encoded taFvs.