Cancer cells that undergo EMT are frequently located at the tumor invasive front (TIF).18 For example, the transcription factor ZEB1 and the adhesion molecule E‐cadherin are expressed at increased and decreased levels, respectively, at the TIF.19 Therefore, investigating EMT at the TIF will help clarify its role in tumor cell invasiveness and metastatic traits. The gene discussed is ZEB1; the disease is neoplasm.