Li et al. (53) found that CD47 is highly expressed on glioma cells and glioma stem cells, while the levels of CD47 in 5 distinct patient-derived pancreatic ductal adenocarcinoma (PDAC) cell lines (T366, T395, T449, T608, and T738) are variable (54). This evidence concerns the gene CD47 and pancreatic ductal adenocarcinoma.