Degrasyn (1 μM and 5.0 μM) almost completely degraded WT1 protein in pancreatic cancer cell lines (Figure 2A) and simultaneously increased the expression of E‐cadherin (Figure 2A), which has been reported to be negatively regulated by WT1.21, 22 To explore whether degrasyn degrades the exogenous WT1 protein, 293T cells were transfected with pCMV‐WT1 overexpressing Flag‐WT1. Here, WT1 is linked to pancreatic neoplasm.