In the pancreatic orthotopic tumour formation model, tumours induced by CSTB‐knockdown cells showed lower bioluminescent emission compared with the control group (Figure 3H), and the expression pattern of proliferating cell nuclear antigen (PCNA) in orthotopic tumours was consistent with that in subcutaneous tumours (Figure 3I). The gene discussed is CSTB; the disease is neoplasm.