In squamous cell carcinoma of the head and neck (SCCHN), E‐cadherin and vimentin are proved to be downstream target molecules of chemokine receptor 7 (CCR7)‐Pyk2, which may participate in the modulation of EMT, migration, and invasion of cancer cells (Yue et al., 2015). The gene discussed is PTK2B; the disease is head and neck squamous cell carcinoma.